What Is 90% of 20?

90% of 20 is 18, the same as 9/10 of 20.

Result

Answer

18

90% of 20 is 18.

  • 20 + 90%: 38
  • 20 − 90%: 2
1890% of 20

Step-by-step solution

The problem

{90}\% \text{ of } {20}

  1. Change 90% to a decimal. Divide by 100.

    90\% = 90 \div 100 = 0.9
    = \textcolor{#0b5c56}{0.9} \times 20

  2. Multiply. Leave out the decimal points and multiply, then put the point back. Count the decimal places: 0.9 has 1, so the answer has 1.

    \begin{aligned} 9 \times 20 &= 180 \\[10pt] 180 \div 10 &= 18 \end{aligned}
    = \textcolor{#0b5c56}{18}

All the working together

\begin{aligned} &{90}\% \text{ of } {20} \\[8pt] &= 0.9 \times 20 && \textcolor{#5b6660}{\textsf{percent → decimal}} \\[8pt] &= \textcolor{#0b5c56}{18} && \textcolor{#5b6660}{\textsf{multiply}}\end{aligned}
What is % of ?

90% of 20 at a glance

90% of 2018
90% as a fraction9/10
20 + 90%38
20 − 90%2

90% of other numbers

QuestionAnswer
90% of 109
90% of 1513.5
90% of 2018
90% of 2522.5
90% of 3027
90% of 4036
90% of 5045
90% of 6054
90% of 7063
90% of 7567.5
90% of 8072
90% of 9081
90% of 10090
90% of 120108
90% of 150135
90% of 200180
90% of 250225
90% of 300270
90% of 500450
90% of 1000900

Other percents of 20

QuestionAnswer
1% of 200.2
2% of 200.4
5% of 201
10% of 202
12% of 202.4
15% of 203
18% of 203.6
20% of 204
25% of 205
30% of 206
33% of 206.6
35% of 207
40% of 208
45% of 209
50% of 2010
60% of 2012
70% of 2014
75% of 2015
80% of 2016
90% of 2018

Frequently asked questions

What is 90% of 20?

90% of 20 is 18: change 90% to a decimal (0.9) and multiply by 20.

What is 20 plus 90%?

20 increased by 90% is 38 (20 + 18).

What is 20 minus 90%?

20 decreased by 90% is 2 (20 − 18).

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