Practice Percentages in Math

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

A way of expressing a quantity as a fraction of 100, written with the symbol % to mean 'per hundred.'

Percent means 'per hundred.' 25% means 25 out of every 100.

Showing a random 20 of 50 problems.

Example 1

easy
Write 40% as a decimal.

Example 2

medium
A test had 25 questions. You got 20 right. Find your percent score.

Example 3

medium
A meal costs $30 plus 7% tax and an 18% tip on the pre-tax amount. What is the total?

Example 4

medium
What percent increase from 50 to 60?

Example 5

medium
45 is what percent of 60?

Example 6

easy
Compute 5% of 400.

Example 7

medium
A bag holds 80 marbles, of which 30% are red. How many are NOT red?

Example 8

hard
Simple interest at 5% per year on a $1{,}600 deposit. How much interest is earned in 3 years?

Example 9

easy
What is 25% of 48?

Example 10

challenge
An item is marked up 50% above cost. Then a 20% discount is applied to the marked-up price. What is the final price as a percent of cost?

Example 11

medium
A shirt costs $40. With 25% off, what's the sale price?

Example 12

easy
What is 10% of 250?

Example 13

medium
30% of a number is 24. What is the number?

Example 14

medium
The population of a town increased from 4,500 to 5,400. What is the percent increase?

Example 15

easy
Write 0.7 as a percent.

Example 16

medium
A class has 45 students; 29 are in band. What percent are in band?

Example 17

easy
What percent of 200 is 50?

Example 18

medium
A stock fell 20%, then rose 25%. Net change?

Example 19

medium
24 is 30% of what number?

Example 20

easy
Compute 50% of 60.