21 divided by 6 is 3 with a remainder of 3, or 3.5 as a decimal. In symbols: 21 ÷ 6 = 3.5.
| Form | Answer |
|---|---|
| Quotient and remainder | 3 remainder 3 |
| Decimal | 3.5 |
| Fraction | 21/6 = 7/2 |
| Mixed number | 3 1/2 |
| Percent | 350% |
Ask how many times 6 fits into 21. 6 × 3 = 18, and 6 × 4 = 24 is too big, so 6 goes into 21 exactly 3 times with 21 − 18 = 3 left over.
The remainder 3 is 3/6 of another 6, and 3 ÷ 6 = 0.5. So 21 ÷ 6 = 3 + 0.5 = 3.5.
Multiply back: 3 × 6 + 3 = 18 + 3 = 21. ✓
| Division | Answer |
|---|---|
| 20 ÷ 6 | 3 R 2 |
| 22 ÷ 6 | 3 R 4 |
| 21 ÷ 5 | 4 R 1 |
| 21 ÷ 7 | 3 |
| 19 ÷ 6 | 3 R 1 |
| 23 ÷ 6 | 3 R 5 |
| 42 ÷ 6 | 7 |
| 21 ÷ 12 | 1 R 9 |
See also: factors of 21.
Other numbers? Browse all division answers, the multiplication table or the fraction calculator.