21 divided by 9 is 2 with a remainder of 3, or about 2.3333 as a decimal. In symbols: 21 ÷ 9 = 2.33... (3 repeats).
| Form | Answer |
|---|---|
| Quotient and remainder | 2 remainder 3 |
| Decimal | 2.33... (3 repeats) |
| Fraction | 21/9 = 7/3 |
| Mixed number | 2 1/3 |
| Percent | 233.33% |
Ask how many times 9 fits into 21. 9 × 2 = 18, and 9 × 3 = 27 is too big, so 9 goes into 21 exactly 2 times with 21 − 18 = 3 left over.
The remainder 3 is 3/9 of another 9, and 3 ÷ 9 = about 0.3333. So 21 ÷ 9 = 2 + 0.3333 = about 2.3333.
Multiply back: 2 × 9 + 3 = 18 + 3 = 21. ✓
| Division | Answer |
|---|---|
| 20 ÷ 9 | 2 R 2 |
| 22 ÷ 9 | 2 R 4 |
| 21 ÷ 8 | 2 R 5 |
| 21 ÷ 10 | 2 R 1 |
| 19 ÷ 9 | 2 R 1 |
| 23 ÷ 9 | 2 R 5 |
| 42 ÷ 9 | 4 R 6 |
See also: factors of 21.
Other numbers? Browse all division answers, the multiplication table or the fraction calculator.