21/40 as a decimal
21/40 as a decimal is 0.525.
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Change either number to try your own. Rounded to 2 places: 0.53. In lowest terms: 21/40.
See the full steps for these numbersHow to work it out
- 1
A fraction is a division. Divide the top number 21 by the bottom number 40.
- 2
40 does not go into 21 even once, so the whole part is 0 and we carry on after the decimal point.
- 3
Long division: bring down a zero each time (multiply the remainder by 10), divide by 40, and write the digit. The remainder reaches 0 after 3 steps, so the decimal ends.
- 4
The result is
LaTeX source of the formulas on this page
\[ \frac{21}{40} = 0.525 \]
\[ \frac{21}{40} = 21 \div 40 \]Long division of 21 by 40
| Step | Remainder × 10 | Divide by 40 | Remainder left |
|---|---|---|---|
| 1 | 210 | 210 ÷ 40 = 5 | 10 |
| 2 | 100 | 100 ÷ 40 = 2 | 20 |
| 3 | 200 | 200 ÷ 40 = 5 | 0 |
Questions
What is 21/40 as a decimal?
21/40 as a decimal is 0.525.
Is 21/40 a terminating or a repeating decimal?
It terminates. The bottom number 40 = 2 × 2 × 2 × 5 has no prime factors other than 2 and 5, so the division ends.
What is 21/40 as a percent?
21/40 is 52.5% as a percent.
How do I round 21/40 to 2 decimal places?
21/40 rounded to 2 decimal places is 0.53.