Percents Study Guide

Which percent proportional model is correct?

• $\frac{part}{\%}=\frac{100}{whole}$

• $\frac{part}{whole}=\frac{\%}{100}$

• $\frac{whole}{part}=\frac{\%}{100}$

• $\frac{part}{whole}=\frac{100}{\%}$

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

In percent of change problems, what is the first step you do to find the part?

• You add the numbers together.

• You don't do anything. Go ahead and set up your proportion.

• You subtract to find out how much the number changed.

• You multiply to find out how much the number changed.

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Set up and solve a proportion to find the answer.

Bill got 18 out of 20 free throws during practice yesterday. What was his freethrow percentage?

• 90%

• 80%

• 75%

• 70%

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Set up and solve a proportion to find the answer.

12 is what percent of 50?

• 12%

• 24%

• 50%

• 65%

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Set up and solve a proportion to find the answer.

Find 40% of 36.

• 0.9

• 1.11

• 4

• 14.4

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Set up and solve a proportion to find the answer.

42 is 30% of what number?

• 126

• 129

• 140

• 165

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Set up and solve a proportion to find the answer. Round the answer to the nearest percent.

15 is what percent of 49?

• 24

• 31

• 35

• 47

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Set up and solve a proprtion to find the answer.

There are 4 dessert choices at a restaurant: brownies, cheesecake, ice cream, and cake. The percentage of people that chose cheesecake is 20%. If 40 people chose cheesecake, what is the total number of people who ordered dessert.

• 40

• 150

• 200

• 250

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Set up and solve a proportion to find the answer.

Kelly purchased a purse that was on sale for 35% off the regular price. The purse was normally sold for $395. What price did Kelly pay for the purse?

• $256.75

• $281.25

• $290.50

• $295.75

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Set up and solve a proportion to find the answer. Round your answer to the nearest whole percent.

If Amber rescued 110 dogs last year and rescues 150 dogs this year, what is the percent of increase of dogs she has rescued?

• 24%

• 27%

• 31%

• 36%

Tags

CCSS.7.RP.A.3