What Is 80% of 100?

80% of 100 is 80, the same as 4/5 of 100.

Result
80

80% of 100 is 80.

  • 100 + 80%: 180
  • 100 − 80%: 20
8080% of 100

Step-by-step solution

The problem

{80}\% \text{ of } {100}

  1. Change 80% to a decimal. Divide by 100.

    80\% = 80 \div 100 = 0.8
    = \textcolor{#0b5c56}{0.8} \times 100

  2. Multiply. Leave out the decimal points and multiply, then put the point back. Count the decimal places: 0.8 has 1, so the answer has 1.

    \begin{aligned} 8 \times 100 &= 800 \\[3pt] 800 \div 10 &= 80 \end{aligned}
    = \textcolor{#0b5c56}{80}

All the working together

\begin{aligned} &{80}\% \text{ of } {100} \\[3pt] &= 0.8 \times 100 && \textcolor{#5b6660}{\textsf{percent → decimal}} \\[3pt] &= \textcolor{#0b5c56}{80} && \textcolor{#5b6660}{\textsf{multiply}}\end{aligned}
What is % of ?

80% of 100 at a glance

80% of 10080
80% as a fraction4/5
100 + 80%180
100 − 80%20

80% of other numbers

QuestionAnswer
80% of 108
80% of 1512
80% of 2016
80% of 2520
80% of 3024
80% of 4032
80% of 5040
80% of 6048
80% of 7056
80% of 7560
80% of 8064
80% of 9072
80% of 10080
80% of 12096
80% of 150120
80% of 200160
80% of 250200
80% of 300240
80% of 500400
80% of 1000800

Other percents of 100

QuestionAnswer
1% of 1001
2% of 1002
5% of 1005
10% of 10010
12% of 10012
15% of 10015
18% of 10018
20% of 10020
25% of 10025
30% of 10030
33% of 10033
35% of 10035
40% of 10040
45% of 10045
50% of 10050
60% of 10060
70% of 10070
75% of 10075
80% of 10080
90% of 10090

Frequently asked questions

What is 80% of 100?

80% of 100 is 80: change 80% to a decimal (0.8) and multiply by 100.

What is 100 plus 80%?

100 increased by 80% is 180 (100 + 80).

What is 100 minus 80%?

100 decreased by 80% is 20 (100 − 80).

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