Illustrative Mathematics Unit 4 Proportions and Percents

Find the constant of Proportionality:

• 5

• 2.5

• 3

• 1.5

Which graph is non-proportional?

• A

• B

• C

• D

Write the equation for this table.
K=9

• y=9

• y=9x

• y=1/9

How many pieces are there per ounce?

• 5 pieces

• 0.2 pieces

• 50 pieces

• 60 pieces

The regular price of a scooter is $65.50. It is on sale for $52.40. What is the percent decrease from the regular price to the sale price of the scooter?

• 35%

• 25%

• 30%

• 20%

Jose started doing extra chores around the house and his allowance changed from $30 per week to $40 per week. What is the percent if change in Jose's allowance?

• Increase of 33.3%

• Increase of 25%

• Increase of 30.3%

• Increase of 38%

What is 10% of 50?

• 10

• 5

• 100

• 20

20 is 25% of what number?

• 25

• 100

• 50

• 80

What is 3/4 written as a percent?

• 3.4%

• 34%

• 75%

• 100%

10 people were asked if they agree that there should be more school days. Of these, 5 responded yes. What percent agreed?

• 50%

• 5%

• 10%

• 75%