Unit 3 Math Review: Ratios, Rates, Percents

Rhys can walk 3,200 meters in 24 minutes. How far can he walk in 3 minutes?

• 320 meters

• 640 meters

• 720 meters

• 400 meters

The deepest part of a swimming pool is 12 feet deep. The shallowest part of the pool is 3 feet deep. What is the ratio of the depth of the deepest part of the pool to the depth of the shallowest part of the pool?

• 1:4

• 12:15

• 15:12

• 4:1

How many centimeters are in 15 meters?

• 0.15 cm

• 150 cm

• 1,500 cm

• 1.5 cm

The graph below represents Donovan’s speed while riding his bike.

Which would be an ordered pair on the line?

• (1, 3)

• (2, 2)

• (9, 3)

• (6, 4)

The table below shows the number of windows and panes of glass in the windows.

Which represents the number of panes?

• windows + 15

• windows + 10

• windows × 6

• windows × 5

Which percent does this shaded grid represent?

• 42%

• 48%

• 52%

• 58%

Allen saves 20% of his monthly paycheck for music equipment. He earned $335 last month. How much money did Allen save for music equipment?

• $67

• $70

• $75

• $65

How do you convert 15 feet to centimeters?

• Multiply 15 feet by  $\frac{1\ ft}{12\ in}$  and  $\frac{2.54\ cm}{1\ in}$  

• Multiply 15 feet by  $\frac{12\ in}{1\ ft}$  and  $\frac{2.54\ cm}{1\ in}$  

• Multiply 15 feet by $\frac{12\ in}{1\ ft}$  and  $\frac{1\ cm}{2.54\ in}$  

• Multiply 15 feet by  $\frac{1\ ft}{12\ in}$  and  $\frac{1\ in}{2.54\ cm}$  

Jacob is saving to buy a new MP3 player. For every $13 he earns babysitting, he saves $6. On Saturday, Jacob earned $52 babysitting. How much money did he save?

• $52

• $28

• $13

• $24

The cost of 9 scarves is $96.75. What is the unit price?

• $107.50

• $10.75

• $11.25

• $10.25