Test Review Percents

Aiden estimates that it will take him 15 minutes to do his math homework. If it actually takes him 50 minutes, what is the percent error of Aiden's estimate?

• 3.3%

• 30%

• 70%

• 2.3%

Answer explanation

To find the percent error, find the amount of error by subtracting the the two numbers (estimate and actual-larger number minus the smaller). Place that over the actual. Divide the numerator by the denominator. Multiply by 100.

Tags

CCSS.6.RP.A.3C

Ava went out to lunch with her friends. The food and beverage cost came to $45.00. If there is a 6.5% meals tax, how much is the bill?

• $2.93

• $47.93

• $51.50

• $6.92

Answer explanation

To find the amount of the bill, you need to figure out the meals tax and then add it to the food and beverage total. To do this, multiply the meals tax percent in decimal form by the total of the food and beverages. Then add this to the food and beverage total.

Tags

CCSS.6.RP.A.3C

Chace's family went out to dinner and the restaurant bill (food and beverages) including tax came to $168. After adding the tip, the total bill came to $201.60. What percentage tip did they give?

• 33%

• 18%

• 15%

• 20%

Answer explanation

This is a percent of change problem. Find the change in the amount and then place it over the old or original amount. Divide the change by the old and multiply the result by 100.

Tags

CCSS.6.RP.A.3C

Larry bought a new Off-Road Dirt Bike helmet on sale. If the original cost was $449.95 and it was on sale for 15% off, how much did Larry pay?

• $434.95

• $464.95

• $382.46

• $67.49

Answer explanation

15% off means discount. To figure out what Larry will pay we need to figure out the amount of the discount and subtract it from the original cost. To find the discount, convert the percent of discount to decimal form and multiply it by the original cost.

Tags

CCSS.6.RP.A.3C

What is 30% of 150?

• 45

• 50

• 55

• 60

Tags

CCSS.6.RP.A.3C

If 45% of a number is 90, what is the number?

• 150

• 200

• 250

• 300

Tags

CCSS.6.RP.A.3C

If 30% of a number is 45, what is the number?

• 150

• 75

• 200

• 120

Tags

CCSS.6.RP.A.3C

At a carnival, 5/8 of the games cost $1. Another 3.5% of the games cost $2. What percent of the games DO NOT cost $1 or $2?

• 66%

• 34%

• 3.5%

• 62.5%

Tags

CCSS.6.RP.A.3C

What is 35% of 180?

• 63

• 70

• 75

• 80

Tags

CCSS.6.RP.A.3C

If 25% of a number is 50, what is the number?

• 200

• 150

• 100

• 250

Tags

CCSS.6.RP.A.3C