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
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.

Darlene8-17 said...

Q. 17)

Baseball Team A - 10/8 = 1.25
Basketball Team A - 115/92 = 1.25
Hockey Team A - 6/4 = 0.666666..

Q. 4)

Total votes for the girls - 9
Total votes for the boys - 21

= 9:21 divided by 3
= 3:7

×Jusŧıŋ£8-17× said...

goood job , you did a good job with the colours .