Steply Language

Percent Calculator with steps

Percent of a number, what percent, find the whole, percent change. Type your problem: see the answer, then every step with the reason. Free, no sign-up.

Solved examples

Each one solved step by step, with the reason for every step.

Calculate 15% of 40 6
What percent of 80 is 28 35%
6 is 50% of what 2 parts = 2 × 6 = 12
Percent change from 40 to 50 25%
Calculate 10% of 70 7
Estimate 50, actual 40, percent error 25%
Calculate 20% of 45 9
5 is 25% of what 4 parts = 4 × 5 = 20
Estimate 45, actual 50, percent error 10%
Calculate 50% of 36 50% of 36 = 36 ÷ 2 = 18
8 is 20% of what 5 parts = 5 × 8 = 40
Estimate 12, actual 10, percent error 20%
Calculate 25% of 80 25% of 80 = 40 ÷ 2 = 20
9 is 10% of what 10 parts = 10 × 9 = 90
Guess 18, actual 20, percent error 10%
50% of what number is 14 2 parts = 2 × 14 = 28

Learn how to do it yourself

Percent · Foundations · 25 problems, printable worksheet
Percent · Foundations · 20 problems, printable worksheet
Percent error · Foundations · 24 problems, printable worksheet