Convert Fractions into Percents
____% of a number
This number is this % of what number?
a number as a % of a number
Percent Error
100

140/80 as a percent

What is 175%?

100

30% of 70

What is 21?

100

50 is 1000% of x

What is x = 5?

100

Scale drawing of a square:

The original has 25 cm side lengths 

The scale drawing has 50 cm side lengths.


The scale drawing as a percent of the original...

What is 200%?

100

The odometer in Mr. Washington’s car does not work correctly. The odometer recorded 15 miles for his last trip to the hardware store, but he knows the distance traveled is actually 20 miles. What is the percent error?

What is 25%?

200

3/40 as a percent

What is 7.5%

200

30% of 20

What is 6?

200

An apple weighs 50 pounds. This is 87% of what a hippo weighs. 

The weight of the hippo rounded to the nearest hundredth

What is 57.47 pounds?

200

60 as a percent of 420

What is 14.29 or 100/7%?

200

A real estate agent expected 18 people to show up for an open house, but 25 attended.

The percent by which the agent's estimate was wrong

What is 28%?

300

12/5 as a percent

What is 240%?

300

125% of 50

What is 62.5?

300

5343 is 15% of x

What is x = 35620?

300

424 as a percent of 45

What is 942%?

300

The veterinarian weighed Oliver's new puppy, Boaz, on a defective scale. He weighed 36 pounds. However, Boaz weighs exactly 34.5 pounds. What is the percent of error in measurement of the defective scale to the nearest tenth?

What is 4.3%?

400

6/25 as a percent

What is 24%?

400

80% of 4

What is 3.2?

400

59 is 60% of x

What is x = 98 1/3?

400

A panda wants to live out its dream life as a unicorn. However, they must first collect 333 shells to get the Sanmamiji to grant their wish. They have collected 33 so far.

Round to the nearest hundredth.

the percent has the panda collected so far compared the total number of shells they need to collect

What is 9.91%?

400

You estimate the magic ruler to measure up to 888 inches. However, it only has up to 12 markings for inches.

The percent error

What is 7300%?

500

5 and 1/2/50 as a percent

What is 11%?

500

125% of 327

What is 408.75?

500

A dentist is collecting teeth for their shrine. So far, they have collected 420 teeth from their patients. They have only collected 12.3% of what they need to finish the shrine. Round (up) to the nearest whole number.

The number of teeth the dentist will have after their shrine is finished

What is 3415?

500

Round to hundredths place:

6063 as a percent of 623839

What is 971.17?

500

The actual length of a soccer field is 500 feet. A measuring instrument shows the length to be 493 feet. The actual width of the field is 250 feet, but the recorded width is 246.5 feet. Find the percent error of the area.

What is 2.8%?