Ratios Proportions Percents

Cross Multiply/Cross Products

• 15

• 420

• 28

• 16

A comparison of two quantities using the word to, for every/each, or a colon :.

• Ratio

• Rate

• Quantity

• Scale Factor

A comparison of two numbers by division.

• Rate

• Unit Rate

• Ratio

• Corresponding Sides

What is 40% of 230?

• 92

• 9200

• 9.20

• 575

12 is 90% of what number?

• 13.3

• 1333.3

• 10.8

• .108

30 is what percent of 40?

• 75%

• 50%

• 25%

• 100%

Are these ratios equivalent?

2:3 and 8:12

• Yes

• No

Complete the ratio table.

• 6

• 8

• 9

• 5

Name the constant of proportionality. y= pictures and x = minutes

• 8

• 16

• 1/8

• 1/16

What is the ratio of the line graph shown?

• 4:1

• 2:1

• 3:2

• 8:1