9/20 as a decimal
Divide 9 by 20, or make the bottom 100: 9/20 = 45/100 = 0.45.
The answer
9/20 = 0.45
How to turn 9/20 into a decimal
The quick way is to make an equivalent fraction with a bottom of 100, because hundredths can be written straight down as a decimal.
- 20 × 5 = 100.
- Do the same to the top: 9 × 5 = 45.
- So 9/20 = 45/100, which is 45 hundredths.
45 hundredths is written 0.45: the last digit goes in the hundredths column.
You can also divide the top by the bottom. Short division gives the same answer:
- 20 does not go into 9, so write 0 and a decimal point, then carry the 9 over as 90 tenths.
- 20 goes into 90 4 times, remainder 10. Write 4, and carry the 10 to make 100.
- 20 goes into 100 5 times exactly. Write 5.
- The remainder is 0, so the division stops: 9 ÷ 20 = 0.45.
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.
All the twentieths
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Questions parents ask
What is 9/20 as a decimal?
9/20 = 0.45.
Is 9/20 a recurring decimal?
No. 20 × 5 = 100, so 9/20 is exactly 45/100 and the decimal stops at 0.45.
Is 9/20 more or less than a half?
9/20 is less than a half: 0.45 is less than 0.5. Half of 20 is 10, and 9 is less than 10.
What is 9/20 as a percentage?
9/20 = 45%.
Which fractions are the same as 9/20?
18/40, 27/60, 36/80, 45/100 and every other fraction you make by multiplying the top and bottom of 9/20 by the same number. They all equal 0.45.
Fractions, decimals and percentages run all through 11+ maths
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