## Tuesday, October 20, 2009

### 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 !

elijah841 said...

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

Yes, because the total would change.

But the percent , decimals and percents will still be the same.

Example :
Blue to yellow = 1 : 6
faction : 1/6
decimal : 0.166....
percent : 16.66 ..

doubled = 2 : 12

faction : 1/6
decimal : 0.166....
percent : 16.66 ..

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

noo, because if the left number is bigger than the right number, it's hardder to get the percent and the decimal.

example : 8:2
fraction : 8/2
decimal : 4

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

Uhm, i dont understand the question? :)

Elaine817 said...

It wouldn't make a big difference to the ratio because if you doubled it you are still comparing the same data as an equivalent ratio.

Not all ratios would be easy to convert to a fraction, percent, and decimal. The ratios that I'm talking about are the part to part to part ratios but if you had part to total or part to whole ratios, those would be easy to convert.

I don't understand what your talking about 'split' the ratios?

×Jusŧıŋ£8-17× said...

goood job ,