Convert each fraction to a decimal.

1.

2.

Convert each decimal to a fraction.

3. 0.1

4. 0.65

5. 30 centimeters = _____ millimeters

4

1

3

2

Ratio: ◦Compare using Division

◦All fractions are ratios

5.3

1.21

6.06.0

8

5

4

1

ratios can be written 3 ways

Always Simplify (Reduce)

8

5 8:5

Girls

Boys

Boys

Girls

Total

Girls

Total

Boys

1. Simplify the ratio 12 : 8 and write the ratio in all three forms.

2. Nine out of 15 soccer players wore headbands on the field.

a) Write the ratio of soccer players who wore headbands to total soccer players.

b) Write the ratio of soccer players who did not wear headbands to total soccer players.

c) Write the ratio of soccer players who wore headbands to those who did not wear headbands.

What has a ratio of 1 : 1 in your life? What has a ratio of 1 : 2 in your life?

Every day after school Kay and Trudy talk on their cell phones to each other. Write a ratio comparing the amount of time Kay spoke to the amount of time Trudy spoke during each conversation.

On Tuesday, Kay spoke for 30 minutes and Trudy spoke for 1 hour 1 hour = 60 minutes

2 to1or 2:1or 2

1

60

30

spokeTrudy minutes

spokeKay minutes

Every day after school Kay and Trudy talk on their cell phones to each other. Write a ratio comparing the amount of time Kay spoke to the amount of time Trudy spoke during each conversation.

On Monday, Kay spoke for 45 minutes and Trudy spoke for 30 minutes

2 to3or 2:3or 2

3

30

45

spokeTrudy minutes

spokeKay minutes

Write a ratio each of three ways comparing: a. Julius’ number of green jelly beans to his total number of jelly beans. b. Luke’s number of green jelly beans to his total number of jelly beans. Fraction Colon “To”

a. 1 : 4 1 to 4

b. 1 : 3 1 to 3

4

1

3

1

4

1

12

3

beansjelly ofnumber total

beansjelly green ofnumber

3

1

9

3

beansjelly ofnumber total

beansjelly green ofnumber

Write a ratio for the number of red jelly beans Julius grabbed to the number of red jelly means Luke grabbed.

Write a ratio as a fraction and simplify.

This ratio can also be written 2 : 1 or 2 to 1.

1

2

2

4

Lukefor red ofnumber

Juliusfor red ofnumber