9/20 as a percentage

Make the bottom 100: 9/20 = 45/100, and per cent means out of 100, so 9/20 is 45%.

The answer

9/20 = 45%

How to turn 9/20 into a percentage

Per cent means out of 100, so a percentage is a fraction with a bottom of 100.

Make the bottom 100: 20 × 5 = 100.
Do the same to the top: 9 × 5 = 45.
So 9/20 = 45/100, which is 45%.

9/20 as a fraction, decimal and percentage

Fraction	Decimal	Percentage
9/20	0.45	45%

Multiply the top and bottom by the same number and the fraction keeps its value: 9/20, 18/40, 27/60, 36/80 and 45/100 are all equal.

45 squares out of 100 are shaded: 45/100, which is 45%.

All the twentieths

Every twentieth is 5 hundredths: 9/20 is 9 × 5 = 45 hundredths, which is 0.45.

9/20 sits between 1/3 (0.333...) and 1/2 (0.5). It is closer to 1/2.

Fraction	Percentage
1/20	5%
3/20	15%
7/20	35%
9/20	45%
11/20	55%
13/20	65%
17/20	85%
19/20	95%

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Questions parents ask

What is 9/20 as a percentage?

9/20 = 45%.

What percentage is 9 out of 20?

9 out of 20 is 45%, because 9 out of 20 is the fraction 9/20.

How do you turn 9/20 into a percentage?

Make the bottom 100. 20 × 5 = 100, so multiply the top by 5 too: 9/20 = 45/100. Per cent means out of 100, so 9/20 = 45%.

What is 9/20 as a decimal?

9/20 = 0.45.

Is 9/20 more or less than 50%?

9/20 is less than 50%: 0.45 is less than 0.5. Half of 20 is 10, and 9 is less than 10.

Fractions, decimals and percentages run all through 11+ maths

Converting between them turns up in 11+ questions on percentages, ratio, money and data. The free diagnostic checks maths, English and both kinds of reasoning, and shows what to practise next. No card is required.

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