Quiz Review

5.1 - 5.4

Write the ratio. Explain what the ratio means.

Use the figures to write the ratio.

• circles to triangles 6:8 or 3:4 Explain: 6 circles to 8

triangles• triangles to rectangles 8:4 or 2:1 Explain: 8 triangles for every

4 rectangles• rectangles to circles 4:6 or 2:3 Explain: 4 rectangles to 6

circles• triangles to total number of figures 8:18 or 4:9 Explain: 8 triangles out of 18

total figures

Find the missing values in the ratio table.

Stars 5 15 20 45

Stripes 3 9 12 27

M&Ms 4 8 40 400Skittles 9 18 90 900

Write a rate that represents the situation.

Any of the following are correct:50 apples in 11 baskets

100 apples in 22 baskets150 apples in 33 baskets200 apples in 44 baskets250 apples in 55 baskets

Write a unit rate for the situation.

6 kittens in 3 boxes2 kittens in 1 box72 biscuits from 9 batches8 biscuits from 1 batch$96 for 16 hours of work$6 for 1 hour of work1800 revolutions in 50 seconds 36 revolutions in 1 second

Word Problems

• Are the rates equivalent? Explain…17 heartbeats in 15 seconds, 68 heartbeats in 60 seconds Yes! You can multiply the first rate by 4 to get the second rate.

Or, simplify both down to 17 heartbeats in 15 seconds.

92 miles on 4 gallons, 100 miles on 5 gallons No! The first rate simplifies to 23 miles on 1 gallon, and the

second rate simplifies to 20 miles on 1 gallon. Those are not equivalent.

Five album downloads cost $30. How much do 7 album downloads cost?Find the unit rate: 1 album download = $6, $6 x 7 = $42.00

$42.00In a recipe, the ratio of flour to water is 3 : 4. You

plan to make 35 ounces in your recipe. How many ounces of flour do you need?

Use a tape diagram: total ounces 35

Ounces of flour total flour: 15 ounces

Ounces of water

Word Problems

5 5 5

5 5 5 5

Which is the BETTER BUY?

You can buy an 3 pack t-shirts for $15.75 or a 4 pack for $21.20. Which is the better buy?

Find the unit rates:3 pack for $15.75 = 1 for $5.25 BETTER BUY!4 pack for $21.20 = 1 for $5.30