## Tuesday, October 20, 2009

### Sierra's Ratio BOB

During math class today, we had to create different ratios using the picture on the right. We had to do 3 part to part ratios, 2 part to total ratios and 2 three part to part ratios.
PART TO PART:
G:Y P:Y R:B

6:4 4:4 18:2

PART TO WHOLE:
G:TOTAL R:TOTAL
6:38 18:38

PART TO PART TO PART:
G:Y:P P:R:Y B:P:G
6:4:4 4:18:4 2:4:6

For the next question, we had to choose one ratio, so I choose 4:4.
RATIO NOTATION: 4:4
PERCENT
: 100%
DECIMAL: 1.00
FRACTION: 4/4

EQUIVALENT RATIOS:
If you don't know what equivalent ratios is, it's similar to equivalent fractions, but written horizontal. Equivalent Fractions have the same value, but they just look different. To make equivalent ratios, you'll have to either divide or multiply the original number by 2. For example, on the left the original ratio is 2:3 if you multiply the 2, it gets 4. Then, you can multiply the 3 and get 6. That is the exact same ratio as 2:3 but just written differently.

1) What is red and blue to green to total?

2)
Are these two fractions equivalent? Why?
 3 and 9 4 12

3) What number should go in place of the question mark? How did you get the number you got?
 1 = ? 3 12

^ Oh ya, Mr. Harbeck .. sorry about the fraction questions instead of ratio questions. I got a bit carried away into fractions.. :l

** DON'T FORGET ABOUT THE TEST TOMORROW. good luck everyone :D

Harvey841 said...

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

Explain.

elijah841 said...

1. What is red and blue to green to total?

red blue green : total

18 2 6 : total

2) Are these two fractions equivalent? Why?

Yes, because the numerator number ( 3 ) multiplied by 3 is 9. And the Denominator ( 4 ) was also multiplied by 3 which is 12.

3) What number should go in place of the question mark? How did you get the number you got?

The ' ? ' should be 4, because, the denominator was multiplied by 4. and whatever you do to the top you do to the bottom or whatever you do to the bottom you do to the top. So 1 x 4 = 4.

Alvin744 said...

Question 1 - red and blue to green to total would be 15:6:33.

Question 2 - Yes, because if you multiply the numerator which is 3 by 3 you get 9, and if you do the same to the bottom you get 12.

Question 3 - The number should be 4 because 1/3 of 12 is 4. I got the answer by dividing the number 12 by 3.

montgorp said...

Hi Sierra

I really appreciate you encouraging them in this way.

Mr Montgomery

(Australian Maths Teacher)

Anonymous said...

Hey Sierra. Thanks for your comment before. I appriciate you having a look and thought that i would return the favour. :)
Nice blog, Great information.

Anonymous said...

I forgot to say,
From Ryan :) Hahaha ^^^