What Is 20% of 100?

20% of 100 = 20

How to calculate 20% of 100

  1. Turn the percentage into a decimal by dividing by 100: 20 ÷ 100 = 0.2.
  2. Multiply by the number: 0.2 × 100 = 20.

X% of Y = X ÷ 100 × Y

Mental math shortcut

Find 10% by moving the decimal point one place left: 10% of 100 = 10. Double it for 20%: 20.

Swap trick: x% of y = y% of x, so 20% of 100 is the same as 100% of 20, which is also 20.

Other percentages of 100

5% of 1005
10% of 10010
15% of 10015
25% of 10025
30% of 10030
40% of 10040
50% of 10050
75% of 10075

20% of other numbers

20% of 102
20% of 122.4
20% of 153
20% of 204
20% of 255
20% of 306
20% of 408
20% of 459
20% of 5010
20% of 6012
20% of 7014
20% of 7515
20% of 8016
20% of 9018
20% of 12024
20% of 12525
20% of 15030
20% of 18036
20% of 20040
20% of 25050
20% of 30060
20% of 40080
20% of 500100
20% of 600120
20% of 750150
20% of 800160
20% of 1,000200

Frequently asked questions

What is 20% of 100?

20% of 100 is 20 (20 ÷ 100 × 100).

What is 100 plus 20%?

100 + 20% = 120.

What is 100 minus 20%?

100 − 20% = 80.

How do you calculate a percentage of a number?

Divide the percentage by 100 and multiply by the number: 15% of 80 = 0.15 × 80 = 12.

How do you find what percent one number is of another?

Divide the part by the whole and multiply by 100: 12 is 12 ÷ 80 × 100 = 15% of 80.