Saturday, October 31, 2009

Brendan's Rate Growing Post

Part 1:

Ratio: Compares quantites measured in the same units





Rate: Compares two quantities measured in different units.





The difference between rate and ratio is ratio compares quantites in the same units and rate compares quantites measured in different units.





Page 60, 9. Mala is shopping for honey. Her favourite brand is available in two sizes.


a) Estimate which is the better buy. Show your thinking.


I think the 1000 mL jar is the better buy because $2.80 (the 250 mL price rounded) multiplied by 4 is $11.20.





b) Determine the better buy. Show your work.


The better buy is the 1000 mL jar because $9.59/10=0.959 and $2.79/2.5=1.116.





Page 61, 10. Trevor rode his mountain bike 84 km in 3 h. Jullian rode 70 km in 2.5 h. Who is the faster cyclist ? How do you know ?


They both ride their bike at 28 km/h. I know that because 84/3=28 and 70/2.5=28




Coin Rate Question: What is the rate for dollars per person if there are $100 and 25 people.

The rate for dollars per person if there are $100 and 25 people is $4/person.

I know that because $100/25 people = $4/1 person.

Part 2:

Ingredients for Spaghetti Sauce

1/2 lb ground beef
1 medium onion diced
1 Celery finely sliced
1 clove garlice
14 oz can of tomatoes chopped
1/2 can of tomato paste
1 tsp parsley
1 1/2 tsp basil
1 tsp oregano
1 tsp sugar
1/2 tsp Worchestershire Sauce
1/2 tsp seasoning salt
1 bay leaf

1) The recipe would look like this if it was supposed to serve 10 people:

1.25 lb ground beef
2.5 medium onion diced

2.5 Celery finely sliced
2.5 clove garlic
35 oz can of tomatoes chopped
1.25 can of tomato paste
2.5 tsp parsley
3.75 tsp basil
2.5 tsp oregano
2.5 tsp sugar
1.25 tsp Worchestershire Sauce
1.25 tsp seasoning salt
2.5 bay leaf


I know that the recipe would look like that because I know that 4x2.5=10 so i just multiplied everything by 2.5.

2) The recipe would look like this if it was meant to serve one person:

1/8 lb ground beef
1/4 medium onion diced
1/4 celery finely sliced
1/4 clove of garlic
3.5 oz can of tomatoes chopped
1/8 can of tomato paste
1/4 tsp of parsley
0.375 tsp of basil
1/4 tsp of oregano
1/4 tsp of sugar
1/8 tsp of Worchestershire Sauce
1/8 tsp of seasoning salt
1/4 bay leaf

I know that the recipe would look like that because I took the recipe for 10 people and divided everything by 10.

Marielle's Rate Growing Post

Ratio :

Ratio means two different quantities measured in the same units .



Rate:

Rate means using two different quantities measured in two other different units .


question 10 )

revor rode his mountain bike 84 km in 3 h. Jillian rode 70km in 2.5 h. Who is the faster cyclist ? How do you know ?

trevor - 84 km / 3 hours
/3 /3
28 1
= 28km / hour

jillian- 70km /2.5 h.
/2.5 /2.5
28 1

= 28km / hour

theyre both the same .

Friday, October 30, 2009

Ralphs %%%%%'s Rate Growing Post

Today we had to do part one of a two part post.




Define ratio




Ratio: Compares two things of the same quantity.







eg. 3:4 7:8







Rate: Compares two things measured in different units.







eg. heartbeats : seconds





Questions:





4. Determine the unit rate in each situation.
a) An orca swims 110 km in 2 h.



2h / 2 = 1h 110 km/2 = 60 km 60km/h



b) A Canada goose flies 800 km in 12.5 h.


12.5 h / 12.5 = 1 800/ 12.5 = 64 64km/h



c) Cathy plants 45 daffodils in 30 min.





30min x 2 = 1h 45daffodils x 2 = 90 daffodils 90 daff/ h






10. Trevor rode his mountain bike 84 km in
3 h. Jillian rode 70 km in 2.5 h. Who is
the faster cyclist? How do you know?






They are both going at the same speed because if you divide 84 by 3 you get 28 and if you divide 70 by 2.5 you still get 28.

Coin Question


If the jar was Canadian, worth 100$ and had 460 coins, what would be the unit rate for each dollar?


Answer:


$ Coins
_____________
$100 460 coins
/ 100
$1 4.6 coins rounded 5 coins



Part 2

I dont know why but, my image won't go on to my post so I'll just do the work anyway.


To find ingredients for 10, you need to multiply the recipe by 2.5. 4 x 2.5 = 10

Recipe for 10 people.

1 1/4 lb ground beef

2 1/2 medium onion diced

2 1/2 celery finely sliced

2 1/2 clove of garlic

35 oz can of tomatoes chopped

1 1/4 can of tomato paste

2 1/2 tsp parsley

3 3/4 tsp basil

2 1/2 tsp oregano

2 1/2 tsp sugar

1 1/4 tsp Worchestershire Sauce

1 1/4 tsp seasoning salt

2 1/2 bay leaf

You can get recipe for one by dividing all ingredients by 4.

Recipe for 1 person

1/8 lb ground beef

1/4 medium onion diced

1/4 celery finely sliced

1/4 clove of garlic

3.5 oz can of tomatoes chopped

1/8 can of tomato paste

1/4 tsp of parsley

7.5ml / 0.375 tsp of basil

1/4 tsp of oregano

1/4 tsp of sugar

1/8 tsp of Worchestershire Sauce

1/8 tsp of seasoning salt

1/4 bay leaf

Leave a comment!

Celdrick's Rate Growing Post

Ratio:A ratio is an expression that compares quantities relative to each other. The most common examples involve two quantities, but any number of quantities can be compared. Ratios are represented mathematically by separating each quantity with a colon – for example, the ratio 2:3, which is read as the ratio "two to three". The quantities separated by colons are sometimes called terms.

Rate:In mathematics, a rate is a ratio between two measurements, often with different units. If the unit or quantity in respect of which something is changing is not specified, usually the rate is per unit time. However, a rate of change can be specified per unit time, or per unit of length or mass or another quantity. The most common type of rate is "per unit time", such as speed, heart rate and flux. Rates that have a non-time denominator include exchange rates, literacy rates and electric flux.


In describing the units of a rate, the word "per" is used to separate the units of the two measurements used to calculate the rate (for example a heart rate is expressed "beats per minute"). A rate defined using two numbers of the same units (such as tax rates) or counts (such as literacy rate) will result in a dimensionless quantity, which can be expressed as a percentage (for example, the global literacy rate in 1998 was 80%) or fraction or as a multiple.



What is the difference between ratio and rate?

A ratio is the comparison between two numbers with the same unit. For example 3 oranges to two oranges. On the other hand, a rate is an indication of the measurements of different units per unit. For example, the statement 3 oranges/ person shows the relationship between the measurement of oranges per person




page 60;Question#4:

4. Determine the unit rate in each situation.


a) An orca swims 110 km in 2 h.

















b) A Canada goose flies 800 km in 12.5 h.






64 km/hr









c) Cathy plants 45 daffodils in 30 min.


















pg61; question 10


10. Trevor rode his mountain bike 84 km in 3 h. Jillian rode 70 km in 2.5 h. Who is
the faster cyclist? How do you know? They both have the same speed.

Jex %%%%%'s Rate Growing Post

Part 1

Today we had to pick a question from page 60 and page 61. We also have to define what rate and ratio is.
Rate:

Rate is a comparison of 2 things that are related. Ex. Hearts beats/ secs.

Ratio:

Ratio is comparing the same quantities.
Ex. 4:3m , 8:3


Questions

4. Determine the unit rate in each situation.
a) An Orca swims 110 km in 2 h. km / h 110/2 55/1 The answer is 55km/1h. What you do is first you have to divide the 2 to make 1. Then you do the same thing to the other side 110/2=55.


b) A Canada goose flies 800 km in 12.5 h. Km/h 800/12.5 64/1 The answer is 64/per 1 hour. All you do is divide 12.5 to make one and you divide 800 by 12.5 to make 64.

c) Cathy plants 45 daffodils in 30 min. Daffodils/mins 45/30 1.5/1 The answer is 1.5 Daffodils per minute. You divide 30 by itself then you divide 45 by 30.

Question 13

12. The rate at which glaciers melt is increasing globally. The Saskatchewan Glacier near Banff has receded 1.5 km in the last 75 years. The Peyto Glacier shown below receded 1320 m from 1923 to 1993. Which glacier had the greater annual rate of melting?

Saskatchewan Glacier:
1500m
------ = 20m/year
75years



Peyto Glacier: 1320m
------- = 18.86m/year
70 year
The Saskatchewan Glacier has the greater annual rate of melting.


Part 2



Today we had to figure out how much ingredients for 10 people and how many for 1 people.



Well all you do is multiply each recipe by 2.5 then you will get 10. If getting one divide 10 because whatever you got you have to divide by 10 to make 1.

Wednesday, October 28, 2009

Hello!

Hello everybody!

This is Kim, your student mentor! Hope you all are having a great week!

I'm just wondering, what can I do to help you in this class? Do you have any ideas?

The site you guys have here looks pretty cool. I think math would have been easier for me in grade 8 if I had a cool website like this to keep notes organized. Do you guys like having class like this too?

Do you have any questions for me? I was thinking that I better make an effort to make myself known as me, instead of the crazy person who posts pirate videos.

Speaking of which, here is another one. Tell me what you think.

Jennifer's BOB 2

In this scribe we had to Show some examples of answers that were wrong.
-What was your mistake.
-How will you remember what to do in future tests.

My mistake was not reading the question correctly and also not studying all that much . To improve this , i will study from now on for future math tests .

1. In a group of 84 students surveyed, the ratio of students preference is seven oatmeal eaters to four granola eaters to three toasted 0 eaters.

of 84 students, how many prefer oatmeal ?
Of 84 students, how many prefer granola ?
What percent ( to one decimal place ) of the group prefers toasted 0's ?

2. A rapid transit has 17 passengers on it as it starts to run. At the first stop 3 passengers get off and 37 passengers get on. What is the ratio of the number of passengers who were on the train as it arrived in the station to the number who were on the train when it left the station?
Express your answer in the lowest terms?

Justine8-17 BOB2

O.K in this scribe we had to Show examples of answers that were wrong. What was your mistake. How will you remember what to do in future tests.


In the test some of my mistakes that really hurt me was not showing my work and not reading the question more better.



1. In a group of 84 students surveyed, the ratio of students preference is seven oatmeal eaters to four granola eaters to three toasted 0 eaters.


Of 84 students, how many prefer oatmeal ?
Of 84 students, how many prefer granola ?
What percent ( to one decimal place ) of the group prefers toasted 0's ?


2. A rapid transit has 17 passengers on it as it starts to run. At the first stop 3 passengers get off and 37 passengers get on. What is the ratio of the number of passengers who were on the train as it arrived in the station to the number who were on the train when it left the station? Express your answer in the lowest terms?

Tuesday, October 27, 2009

Gilberts BOB2

O.K in this scribe we had to Show examples of answers that were wrong. What was your mistake. How will you remember what to do in future tests.


In the test some of my mistakes that really hurt me was not showing my work and not reading the question more better.



1. In a group of 84 students surveyed, the ratio of students preference is seven oatmeal eaters to four granola eaters to three toasted 0 eaters.


Of 84 students, how many prefer oatmeal ?
Of 84 students, how many prefer granola ?
What percent ( to one decimal place ) of the group prefers toasted 0's ?


2. A rapid transit has 17 passengers on it as it starts to run. At the first stop 3 passengers get off and 37 passengers get on. What is the ratio of the number of passengers who were on the train as it arrived in the station to the number who were on the train when it left the station? Express your answer in the lowest terms?

Monday, October 26, 2009

Noelle's BOB2 ratio

Hello Everybody,

One question that i got wrong with the test, was question number 4.

The question is :
Four students are runninh for student council president. Of 30 Students polled, 15 chose Mike, 3 chose Patricia, 6 chose Brian, and the rest chose karen. what is the ratio of votes for girls to votes for boys in the student council election? express the ratio in lowest terms.

The answer was choice a, but i chose b.
The reason i got that wrong was because i switched the ratio. The correct answer was 3:7 and I chose 7:3.



The next question was:
Question number 5

Eric is able to stop 85% of the shots on goal. If he faces 27 shots on goal, how many goals would likely be scored on him?

The correct answer was option b which was 4, but the answer i put was option c which was 9.



PLEASE COMMENT, BLAH.

Layton's BOB & ratio for October 26
























part to part ratios:


Blue:red 1:6

yellow:blue 4:1

Green:red 7:6


Part to total ratios:

Green to total 7: 18

yellow to total 4: 18



Part to Part to Part ratios:

yellow to green to blue 4 : 7 : 1

yellow to green to red 4 : 7 : 6



3 Questions

What would the ratio be for red to green Simplest terms?


how would you wright red to green in fraction or decimal?


What would be the ratio of ble to yellow to green?

Sunday, October 25, 2009

keannas BOB , and ratio homework


our homework was too make a scribe post for what we did in class.


Blue to Green - 1:6
Red to Yellow - 6:4
Green to Yellow - 6:4
Part to Total Ratios -
Green to Total - 6:18
Red, Green to Total - 12:18
Red to Total - 6:18
Three Part Ratios -
Green to Red to Yellow - 6:6:4
Red to Blue to Green - 6:1:6



Three questions
My Three Questions ..1. What would be the ratio of Red, green,yellow, blue to toal?

2. How would you write red to green in decimal or fraction?

3.Whats would be the answer to red,green; to total ?


Argies BOB for October 20


Part to Part Ratios

Green to Blue = 7:1

Red to Green = 6:7

Red to Yellow = 6:4

____________________

Part to Total Ratios

Red to Total = 6:18

Blue to Total = 1:18

____________________

Three Part Ratios

Red to Blue to Yellow = 6:1:4
Red to Blue to Green = 6:1:7

The ratio im doing is: 1:6

Word: Blue to Red

Fraction: 1/6
_
Decimal: 1.6

Percent: 16.6%


My questions are:

1) What would be the ratio for Green to Total?
2) Express 6:7 as a fraction, decimal and percent.
3) Represent Red to Yellow simplest terms and a fraction, decimal, and percent.

___________________________________________________________________

What were the mistakes you made on your test. Show examples of answers that were wrong. What was your mistake. How will you remember what to do in future tests.


Some mistakes I made was not showing how I got my work, not showing ratios in lowest terms, and not reading the questions right.

The next time I do a math test I am going to read the question more carfeully, remember to make lowest terms and study harder.

Rewrite 2 questions that gave you difficulty with different numbers.

1) A picture frame with a width to length ratio of 4:6. If the width of the photo is 8 cm, the length of the photo is

2)A rapid transit has 17 passengers on it as it starts to run. At the first stop 3 passengers get off and 37 passengers get on. What is the ratio of the number of passengers who were on the train as it arrived in the station to the number who were on the train when it left the station? Express your answer in the lowest tesms.

Saturday, October 24, 2009

Larrisa's BOB2

What were the mistakes you made on your test. Show examples of answers that were wrong. What was your mistake. How will you remember what to do in future tests.


What I learned and what I need to work on


I really need to work on is to study more about ratios tables, where you make a ratio table. and read the questions more carefully , so I could come up with a really good answer.

1. In a group of 84 students surveyed, the ratio of students preference is seven oatmeal eaters to four granola eaters to three toasted 0 eaters.

Of 84 students, how many prefer oatmeal ?

Of 84 students, how many prefer granola ?

What percent ( to one decimal place ) of the group prefers toasted 0's ?


2.
Four students are running for student council president. Of 60 students polled, 30 chose Mike, 6 chose Patricia, 12 chose Brian, and the rest chose Karen. What is the ratio of votes for girls to votes for boys in the student council election? Express the ratio in lowest terms.


Thursday, October 22, 2009

Brain Teasers!

Hey guys,
I was looking on the internet for something cool for you guys to try out! I found some brain teasers so if you're interested in trying them out, click here! Some of them are confusing but I hope you like them! Let me know!
Shelby Mackey

Wednesday, October 21, 2009

Jamie's BOB Ratio for Oct. 20





For homework, Mr. Harbeck told us to do a scribe about what we did today.




Part to Part Ratios -


Blue to Green - 1:6


Red to Yellow - 6:4


Green to Yellow - 6:4




Part to Total Ratios -


Green to Total - 6:18


Red, Green to Total - 12:18


Red to Total - 6:18




Three Part Ratios -


Green to Red to Yellow - 6:6:4


Red to Blue to Green - 6:1:6




3 Questions:




1) What would the ratio be for blue, green, yellow to total?


2) What would the percent, fraction, decimal be for the ratio red, yellow to total?


3) What would the ratio be for red to total in simplest terms?
Thank you for reading my post and please leave a comment!


Part 2 (BOB2)

What were the mistakes you made on your test. Show examples of answers that were wrong. What was your mistake. How will you remember what to do in future tests.

  • Some of the mistakes I did was not reading the questions carefully. Some of the questions I got wrong were because I didn't do the math, and I was such in a hurry. Next time I do a math test, or any test, I will study, and take my time to read the questions carefully, and solve them properly using word ratios, ratio tables, etc.

Rewrite 2 questions that gave you difficulty with different numbers.


1. Use the data in the table below to determine which sports teams have equivalent scored by to scored against ratios.

A survey of students in the school found that 18 had Sony phones, 56 had Motorola cell phones, 12 had LG phones, and 26 had Nokia phones.

  • What is the ratio for Motorola phones to the total of phones? Simplify your answer.

a. 56:112 b. 7:14 c. 28:56 d.1:2

Elissas BOB & RATIO for October.21,09


For homework we had to pick a picture ,this is the one i picked !

-Part to Part ratio

blue to green
1:6

red to yellow
6:4

green to yellow
6:4

-Part to total ratios
Blue to Total 1:17

Yellow to Total
4:17

Green to Total
6:17

Red to Total
6:17

Red to Green to Total =
12:17

My Three Questions ..
1. What would be the ratio of Red, green,yellow, blue to toal?
2. How would you write red to green in decimal or fraction?
3.
Whats would be the answer to red,green; to total ?

Heres the link to the picture.
http://www.flickr.com/photos/smigol/2645654371/

BOB & RATIO


Today, we had to pick a picture for home work. I pick this picture.

Part to Part ratio:

Blue to Green
1 : 6

Red to Yellow
6 : 4
Yellow to Green
4 : 6

-------------------

Part to Total ratio:

Blue to Total 1:17

Yellow to Total 4:17

Green to Total 6:17

Red to Total 6:17

Red to Green to Total = 12:17

-------------------------------

Blue to Yellow to Green - 1 : 4 : 6

Red to Yellow to Green - 6 : 4 : 6







Here's my question!

1.)What would be the ratios of Red to total?

2.)What would be the ratios of Green to Yellow?

3.)What would be the ratio of Blue to Green to Yellow?

justiиє's Ratio BOB oct 20




Part to Part Ratios
Green to Blue=7:1
Red to Green=6:7
Red to Yellow=6:4

Part to Total Ratios
Red to Total=6:18
Blue to Total=1:18

Three Part Ratios
Red to Blue to Yellow=6:1:4
Red to Blue to Green=6:1:7


Make 3 question :

1. Express the ratio Yellow to Red in a Ratio, Fraction, Decimal, and Percent.

2. What would the ratio be if the Yellow to Red ratio if the ratio was simplified.

3. What would be the ratio of Red, Green, Blue, Yellow: Total


Tuesday, October 20, 2009

Darlene's BOB & RATIO for Oct. 20


Today in class we did a lot of work that had to to with part-to-part ratios, part-to-total ratios and part-to-part-to-part ratios . Then Mr. Harbeck assigned us to make a scribe post about it.

Part to Part Ratios
  • Green to Blue = 6:1
  • Blue to Yellow = 1:4
  • Red to Green = 6:6
Part to Total Ratios
  • Green to Total = 6:17
  • Blue to Total = 1:17
Three Part Ratios
  • Yellow to Green to Blue = 4:6:1
  • Red to Yellow to Green = 6:4:6
Ratio, Fraction, Decimal and Percent
  • Blue to Yellow = 1:4, 1/4, 0.25 & 25%
Equivalent Ratios
  • Red to Green = 6:6
Simplification :
  • Red to Green = 3:3
Red : 6 divided by 2 = 3
Green : 6 divided by 2 = 3

The three questions !
  1. What would the ratio be for Green, Yellow to Total ?
  2. What would the ratio be for Yellow, Red, Blue, Green to total ?
  3. How would you write Green to Total in fraction, decimal and percent ?
Part 2

Mr. Harbeck told us to re Bob our Bob post and talk about our mistakes on our test.

The mistakes I made on my test was not expressing the ratio in lowest terms and reading the question wrong even though the important things I needed to know was already highlighted.

Ex.

The ratio of the red cards to the whole deck is :
  • I put in 2:4 instead of 1:2. I forgot to express the answer in the lowest terms.
I will remember to express the ratio in lowest terms by reading the highlighted words carefully next time.

2 questions that you had difficulty with

Q. 17)

Team Scored by Scored Against
Baseball Team A 10 8
Basketball Team A 115 92
Hockey Team A 6 4

Q. 4)

Four students are running for student council president. Of 60 students polled, 30 chose Mike, 6 chose Patricia, 12 chose Brian, and the rest chose Karen. What is the ratio of votes for girls to votes for boys in the student council election? Express the ratio in lowest terms.

Connors' Ratio BOB Oct. 20, 2009




Part to Part Ratios
- Part to Part ratios compare 2 different groups of things from the same total.
Blue to Yellow
2:6

Green to Red
6:10

Yellow to Green
6:6

Part to Total Ratios
-Part to Total ratios compare one group of things to the total amount of all of it.

Red to Total
10:24

Yellow to Total
6:24

Part to Part to Part ratios
-Part to Part to Part ratios compare 3 different groups from the same total to eachother.

Yellow to Red to Green
6:10:6

Red to Blue to Yellow
10:2:6


Choose a ratio to do in a Ratio form, Percent, Fraction, and Decimal.

Yellow to Red

6:10

Yellow/Red = 6/10

6/10= 0.6

0.6 x 100 = 60.0%


Make an Equivalent Ratio

I am going to use the one I just used.
Yellow to Red
6:10 = 3:5

6/2 = 3
10/2 = 5


Three Questions for you to do.
1) What is the Red to Total in an equivalent ratio?

2) Make a Part to Part to Part ordering the colours of M&M's from least to greatest.

3) How many Part to Part ratios could you make if there were two more colours there?



This is my BOB scribepost.
Please comment.





BOB Continued

I made mistakes by not looking my work over and by not going back to questions that I didn't get.
I can fix that on future tests by going back to do the hard questions later and reading the questions very slowly.

Warren stopped 90% of all the shots. There were 30 shots attempted. How many shots made it in?
A picture frame has a Width to Length ratio of 6:8. If the Width of the photo is 10 what is the Length?



Please answer my questions for my BOB PART 2

Noel's Ratio BOB2 oct 20



Part to Part Ratios
Green to Blue=7:1
Red to Green=6:7
Red to Yellow=6:4

Part to Total Ratios
Red to Total=6:18
Blue to Total=1:18

Three Part Ratios
Red to Blue to Yellow=6:1:4
Red to Blue to Green=6:1:7


Make 3 question :

1. Express the ratio Yellow to Red in a Ratio, Fraction, Decimal, and Percent.

2. What would the ratio be if the Yellow to Red ratio if the ratio was simplified.

3. What would be the ratio of Red, Green, Blue, Yellow: Total

Ammorn's BOB ratio

The picture I chose for my BOB was this m&m one.







1. Make 3 part to part ratios, 2 part to total ratios and 2 three part ratios .



Part-to-part ratio

- green to red = 6:8

- green to yellow = 6:5

- blue to red = 1:8







Part to total ratio

- yellow to total = 5:20

- blue to total = 1:20



Three part ratio

- green to red to yellow = 6:8:5

- blue to green to yellow = 1:6:5









2.Choose one ratio that you have done and show how to write that ratio in ratio notation, fraction, decimal and percent form.


- blue to red = 1:8, 1/8, 0.13, 13%



3. Choose one ratio that you have written and show how to create equivalent ratios.



- green to red = 6:8















4. Make 3 questions .

- How do you simplify 30:25 ?
- What is the ratio of yellow, blue: total ?
- What is the ratio of green to total, in percent, decimal and fraction ?

LEAVE A COMMENT (:



--------------------------------------------------------------------------

Bob Part 2

Some mistakes I made on the test were:
- I didn't read the question carefully
- I didn't show my work based on ratios
- I didn't simplify some of the answers

What I need to do for the next test is:
- Read the question at least 2 times
- Make sure I put the answer in the lowest term

Questions that gave me difficulty were:

6. A stable has 39 horses available for trail rides. Of these horses, 26 are all born, 8 were mainly white, and the rest are black. Express in lowest terms the ratio of brown horses to mainly white horses to black horses.
a) 13 : 4 : 2 b) 13 : 4 : 5 c) 26 : 8 : 5 d) 39 : 26 : 8

8. A picture frame has a width to length ratio of 5 : 7. If the width of the photo is 9 cm, the length of the photo is
a) 11 cm b) 12.6 cm c) 14 cm d) 16 cm

Answer these questions in the comment box.

Larrisa's BOB for Oct.20,2009





















1. Make 3 part-to-part ratios, 2 part to total ratios, and 2 three part ratios.

Part-to-part ratio
1. blue to green = 1:6
2. yellow to red = 4:8
3. blue to yellow = 1:4

Part to total ratio
1. blue to total = 1:17
2. green to total = 6:17

Three part ratio
1. blue to green to yellow = 1:6:4
2. green to red to blue = 6:8:1



2. Choose one ratio that you have done and show how to write that ratio in ratio notation, fraction, decimal and percent form.




Green
to Yellow

Ratio Notation:
6:6

Fraction:
6/6 & if you divide 6 by 6 you get 1/1 for the lowest terms

Decimal:
1.00

Percent:
100 %



3. Choose one ratio that you have written and show how to create equivalent ratios.


green to total = 6:17













4. Make 2 questions.

-What is the ratio of dark to light colors ?

-What is the ratio of green to red to total ?

- Show how to write yellow to green to red in ratio and ratio notation, fraction, decimal and percent form.

Don't forget to comment ! ,
sorry if I did it wrong , at least I did one (:


STUDY FOR MATH TEST TOMORROW !








































BOB ratio homework

For homework I chose the M&M BOB :)





1. ) Part to Part


red:blue 6:1

green:yellow 6:4

blue:green 1:6



2. ) Part to Total


red:total 6:17

green:total 6:17

blue:total 1:17

yellow:total 4:17




3. ) Part to Part to Part/3-Part


red:blue:green 6:1:6

blue:green:yellow 1:6:4

green:yellow:red 6:4:6





I chose to the ratio

1:6


Blue:Green

Fraction- 1/6

Decimal- 16.6

Percent- 16.6%


My 3 questions are..


1. ) What is the part to part to part ratio for red:blue:green?

2. ) What is the decimal for 6:4?

3. ) What is the three part ratio answer for green:red:yellow?

















Ratio & BOB

Today , Mr. Harbeck went over some of our posts . He commented on my capitals and said that I forgot to make his first letter a capital . so there you go Harbeck-o . happy ? (: Okay , so , here is my assignment . Though , i don't think you can see the picture , or is it just my computer ? .. hm :O

Part to Part ratio
blue to green 1:6
yellow to red 4:6
yellow to green 4:6

Part to total ratio
green to total 6 : 17
blue to total 1: 17

Three part ratio
red to green to blue 6 : 6 : 1
red to yellow to blue 6 : 4 : 1

The ratio I picked is :
ratio-2:4
fraction-2/4
decimal-o.5
percent-50%
word- 2 to 4 .

The three questions i picked are
a) What is the ratio of blue to red?
b) What is the ratio of yellow to blue to total?
c) What is the ratio of green to total ?

Joseph's bob for 10.20.09

For homework today we had to do a post that had 3 part to part ratio, 2 part total, and 2 three part ratios
next write the ratio in ratio notation, fraction, decimal and percent form.
now pick one and show how to create equivalent ratios.

then make 3 questions that people can answer.an average gr.8 question.


1.part to part ratios
a) RED TO BLUE 6:1
b)GREEN TO RED 7:6
c)YELLOW TO BLUE 4:1
2.part to total ratios
a)RED TO TOTAL 6:18
b)BLUE TO TOTAL 1:18
3.three part ratios
a)RED TO BLUE TO GREEN 6:1:7
b)BLUE TO YELLOW TO GREEN 1:4:7

Now making a ratio into a percent, decimals, fractions.
BLUE TO TOTAL 1:18, 1/18, o.o5..., 05.....%

you cant simplify this ratio any further.

now the my three questions is:

a) What would be the ratio for yellow to total?
b) What is the ratio of red to blue?
c) What is the ratio of red to yellow to total?

Marielle's BOB for 10202009


HOMEWORK FOR TODAY (:


for this post i picked the m&m picture .
part to part ratio
green:blue = 6:1
red:green=6:6
yellow:blue= 3:1
part to part to part ratio
red:yellow:blue=6:3:1
yellow:green:red=3:6:6
Part to total ratio
red:total=6:17
green:total=617
blue:total=1:17
blue:red
fraction: 1/6
decimal: 0.166
percent: 16 %
ratio: 1:6
word: blue to red or blue:red
my three questions are :
- what is the ratio to red:blue:total ?
- what is the fraction of blue:yellow ?
- what is the percent of green:red ?


bob 2

My mistakes in my test were some of the multiple choice and the ordering ratio at the back of the test .

for example :
number 5 . Eric is able to stop 85% of the shots on goal. If he faces 27 shots on goal, how many goals would likely be scored to him ?
a. 3 b. 4 c. 9 d. 15

for that question i put , C . when the right answer was D .

One question that gave me difficulty was number 15 . Ordering the ratios from lowest terms.
Another is question 17 , About the teams with the scored by and scored against fact .






Celdrick's BOB for Oct 20/09

For homework today we had to pick one of the pictures I picked the m&m candies



.

















Part to Part ratio

blue to green 1:6

yellow to red 4:6

yellow to green 4:6


Part to total ratio

green to total 6 : 17

blue to total 1: 17

Three part ratio

red to green to blue 6 : 6 : 1

red to yellow to blue 6 : 4 : 1

The ratio I picked is 1:4
1:4

1/4

0.25

25%



The three questions i picked are

a) What would be the ratio for green to total?
b) What is the ratio of blue to red?
c) What is the ratio of yellow to blue to toal?
-------------------------------------------------------------------------------------
What are the mistakes that I made from the test?

-I didn't read the questions carefully and didn't make it in lowest terms.
-I lost mistakes because I didn't show my work.
-I also lost marks from the multiple choice.

Next time there's a math test I will:

-Study harder
-read the questions carefully
-double check it when done
-use word ratios and complete the answer


Questions:

1)
Eric is able to stop 85% of the shots on goal. If he faces 27 shots on goal, how many goals would likely be scored on him?

a) 3 b) 4 c)9 d) 15

2) A picture frame with a width to length ratio of
5:7. If the width of the photo is 9 cm, the length of the photo is


a) 11cm b) 12.6cm c) 14cm d) 16 cm

Noelle's Ratio BOB Blog Post

Greetings Everybody,
This is my BOB post for the day about ratios.

[I had difficulties putting the pictures, but the picture i was going to select was the pictures with the m&ms.]

Now the next thing I will do is to show you three part to part ratios with the written ratio witch is needed:

Red to Green = 7 : 6

Green to Blue = 6 : 1

Blue to yellow = 1 : 6


My next step is to now show you two part to total ratios also with the word ratio to clearify my work:

Red to Total = 7 : 20

Blue to Total= 1 : 20

Now I will demonstrate two 3 part ratios, also with the word ratios:
[NOTE: Word ratios are important because you know what you are comparing.]

Green to Blue to Yellow = 6 : 1 : 6

Red to Blue to Total = 7 : 1 : 20


One of the ratios i chose was 7 : 20 which was a ratio of the red m&ms to the toal. One thing you can do to the ratio is change it into a fraction, which is easy in this case, all you have to do is flip the ratio sideways so that it is 7 over 20 or 7/20. Another form you can write this in is a percent, what you can do to make a percent is, turn 20 into 100 by multiplying it by 5, and what you do to 20, you'll have to do it to 7 aswell, and 7 multiplied by 5 is 35. Then you would get another fraction which is 35 over 100 or 35/100; also shown as 35%. Percents are then easily converted to decimals, just put a decimal point in front of it, making it 0.35.

Another thing you can do is make an equivalent ratio, all you would have to do it double the ratio on both sides. From 7:20 into 14:40. Simple.

My 3 comment questions are:

1. Would it make a big difference if the amounts all doubled ? Why or why not ?

2. Would all the ratios be easy to convert to a fraction, percent, and decimals ?

3. Can you split the ratios? Why or why not ?


Hope you learnt something and i hope you liked my post !

Ralph and BOB Ratio October 20 2009



Today in class we did alot of work with dealing with ratios. Our homework today was to do a post that had:


3 part to part ratios, 2 part to total ratios and 2 three part ratios


Then I had to:


write that ratio in ratio notation, fraction, decimal and percent form.


Next I would have to:


pick one and show how to create equivalent ratios.


Finally create 3 questions that you want people to answer in the comments. Do not make them to hard or too easy.




Part to Part Ratios
Green to Blue=7:1
Red to Green=6:7
Red to Yellow=6:4

Part to Total Ratios
Red to Total=6:18
Blue to Total=1:18

Three Part Ratios
Red to Blue to Yellow=6:1:4
Red to Blue to Green=6:1:7


Converting Ratio to a : Fraction, Decimal, and Percent

Red to Total : 6:18 or 6/18 or 0.33 (Infinite) or 33.33(infinite) %

Simplifying Ratios

6:18 simplified would be 1/3
6 (divided) by 6 is 1
18 (divided) by 6 is 3
6:18 = 1/3 = 0.33(infinite)


THE 3 QUESTIONS!!!

1. Express the ratio Yellow to Red in a Ratio, Fraction, Decimal, and Percent.

2. What would the ratio be if the Yellow to Red ratio if the ratio was simplified.

3. What would be the ratio of Red, Green, Blue, Yellow: Total

Thanks for Reading!
Don't Forget to Comment!
ANSWER MY QUESTIONS!
Some mistakes I made on my test were that:
1)I didn't read the questions well enough.
One question was about votes for student council.
The part I didn't read well enough was that the ratio had to be GIRLS to BOYS .
The ratio I put was boys to girls so I got the question wrong.
2)I should find more easier and faster ways to solve harder equations.
For question 17 I had to find out what two teams were equivalent.
I spent alot of time looking for a number that I could multiply the two numbers by, when I could have,
divide the first number by the second number and see which ones match.
3)I need to always go over the test again in case I missed a question.
I could of gotten more marks if I read over all the questions. Question number 16 was a really easy question but I accidentally skipped it and went onto the next question.
QUESTIONS
1. A picture frame has a width to length ratio of 10:14. If the width of the photo is 18 cm , the length of the photo is _______
a) 22 b)25.2 c)28 d) 32
2. A stable has 78 horses. Of these horses, 52 are brown, 16 are white and the rest are black. Express the ratio in the lowest terms of brown to white to black horses.
a) 26:4:5 b)13:4:2 c) 52:16:10 d) 26:8:5
PLEASE COMMENT AGAIN !
ANSWER THE QUESTIONS !

Allysa's Bob Ratio

For today's class we have to blog our homework in a way of studying for the test tomorrow.



1. Make 3 part-to-part ratios, 2 part to total ratios, and 2 three part ratios.
* Must have a word ratio and a ratio notation for each *

a) Part-to-part ratio
1. blue to green = 1:6
2. yellow to red = 4:8
3. blue to yellow = 1:4

b) Part to total ratio
1. blue to total = 1:17
2. green to total = 6:17

c) Three part ratio
1. blue to green to yellow = 1:6:4
2. green to red to blue = 6:8:1


2. Choose one ratio that you have done and show how to write that ratio in ratio notation, fraction, decimal and percent form.

blue to green = 1:6, 1/6, o.16, 16.6%

3. Choose one ratio that you have written and show how to create equivalent ratios.

yellow to total = 4:17










4. Make 3 questions.
a) What would the ratio be for blue, red : total?
b) Express the colours blue and green into a word ratio, ratio notation, fraction, decimal, and a percent.
c) What would be the ratio of red : total? Express this into a ratio notation, fraction, decimal, and a percent.

Don't forget to comment, and answer my questions please.

---------------------

PART 2

1. What were the mistakes you made on your test. Show examples of answers that were wrong. What was your mistake? How will you remember what to do in future tests?
One mistake I made on my test was forgetting to simplify a ratio in LOWEST terms. Some of the examples of the answers were :
8:32 in simplified form would be 1:4, but some wrong answers would be 4:16 or 2:8.
10:80 in simplified form would be 1:8, but a wrong answer would be 5:40.
5:125 in simplified form would be 1:25, but a wrong answer would be 2:6.
18:27 in simplified form would be 2:3, but a wrong answer would be 6:9.
What I should do in future tests to remember how to simplify a number is, I can just think about the lowest possible way for a ratio, like splitting a number in half or dividing with larger numbers.

2. Rewrite 2 questions that gave you difficulty with different numbers. Answer the questions correctly in the comments to your blog. Encourage others to participate at your blog by getting them to answer your questions.

2 QUESTIONS.

a) Eric is able to stop 50% of the shots on goal. If he faces 16 shots on goal, how many goals would likely be scored on him.

b) A picture frame has a width to length ratio of 10:14. If the width of the photo is 18 cm, the length of the photo is ...


* THANKS FOR READING,

DON'T FORGET TO COMMENT AND ANSWER MY QUESTIONS :)

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