## Tuesday, October 20, 2009

### BOB, ratio, tamika816, oct.20

I grouped these crayons in 4 different groups. GREENS- spring green, yellow green, green. BLUES- cadet blue, turquoise blue, sky blue. REDS- salmon, wild strawberry. OTHER- silver, yellow orange, purple, gold.

Part-to-part ratios

- GREENS to REDS

3:2

- BLUES to OTHER

3:4

- REDS to OTHER

2:4

Part-to-whole ratios

- REDS to total

2:12

- OTHER to total

4:12

Part-to-part-to-part

- GREENS to REDS to OTHER

3:2:4

- BLUES to OTHER to GREENS

3:4:3

Now I'm going to take REDS to OTHER and write it in ratio notation, as a fraction, as a decimal, and as a percent

ratio notation

2:4

fraction

2/4

decimal

0.5

percent

50%

Now I'm going to take OTHER to total and make an equivalent ratio.

An equivalent ratio is a ratio written in a lower term or a higher term.

To get a lower term you have to divide the numbers by any same number that will equal a whole number. To get a higher term you have to multiply the numbers by any same number. Example:

lower term 4:12= 2:6 I divided both numbers by 2.

higher term 4:12= 12:36 I multiplied both numbers by 3.

Here are 3 questions you should answer.

write blue to other as a fraction then write it 2 different ways.

write other to total as lowest term

Is greens to reds in the lowest term? Why?

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Good job Tamika!

ReplyDelete1)blue to pink 3/2 6/4 18/12

2)green to total 3/12 1/4

3)Yes because 3/2 cannot be divided equally.

Q1

ReplyDelete-blue to yellow 3/2.you can write it as a decimal 1.5 and as a percent 150%

Q2

-green to total 3:12..if you simplify that no. it will looks like this 1:4

Q3

-greens to red are in lowest terms because if you divide 2 by 2 then it will equal to one and if you divide 3 by 2 you'll get 1.5..you can't put 1.5:1 because mr.harbacks said that it should only equal to a whole no.