What Is 20% of 40?

20% of 40 is 8, the same as 1/5 of 40.

Result

Answer

8

20% of 40 is 8.

  • 40 + 20%: 48
  • 40 − 20%: 32
820% of 40

Step-by-step solution

The problem

{20}\% \text{ of } {40}

  1. Change 20% to a decimal. Divide by 100.

    20\% = 20 \div 100 = 0.2
    = \textcolor{#0b5c56}{0.2} \times 40

  2. Multiply. Leave out the decimal points and multiply, then put the point back. Count the decimal places: 0.2 has 1, so the answer has 1.

    \begin{aligned} 2 \times 40 &= 80 \\[10pt] 80 \div 10 &= 8 \end{aligned}
    = \textcolor{#0b5c56}{8}

All the working together

\begin{aligned} &{20}\% \text{ of } {40} \\[8pt] &= 0.2 \times 40 && \textcolor{#5b6660}{\textsf{percent → decimal}} \\[8pt] &= \textcolor{#0b5c56}{8} && \textcolor{#5b6660}{\textsf{multiply}}\end{aligned}
What is % of ?

20% of 40 at a glance

20% of 408
20% as a fraction1/5
40 + 20%48
40 − 20%32

20% of other numbers

QuestionAnswer
20% of 102
20% of 153
20% of 204
20% of 255
20% of 306
20% of 408
20% of 5010
20% of 6012
20% of 7014
20% of 7515
20% of 8016
20% of 9018
20% of 10020
20% of 12024
20% of 15030
20% of 20040
20% of 25050
20% of 30060
20% of 500100
20% of 1000200

Other percents of 40

QuestionAnswer
1% of 400.4
2% of 400.8
5% of 402
10% of 404
12% of 404.8
15% of 406
18% of 407.2
20% of 408
25% of 4010
30% of 4012
33% of 4013.2
35% of 4014
40% of 4016
45% of 4018
50% of 4020
60% of 4024
70% of 4028
75% of 4030
80% of 4032
90% of 4036

Frequently asked questions

What is 20% of 40?

20% of 40 is 8: change 20% to a decimal (0.2) and multiply by 40.

What is 40 plus 20%?

40 increased by 20% is 48 (40 + 8).

What is 40 minus 20%?

40 decreased by 20% is 32 (40 − 8).

Any other percentage question – a part as a percent, percent change, percent difference: use the Percentage Calculator.