87 divided by 4 is 21 with a remainder of 3, or 21.75 as a decimal. In symbols: 87 ÷ 4 = 21.75.
| Form | Answer |
|---|---|
| Quotient and remainder | 21 remainder 3 |
| Decimal | 21.75 |
| Fraction | 87/4 |
| Mixed number | 21 3/4 |
| Percent | 2175% |
Ask how many times 4 fits into 87. 4 × 21 = 84, and 4 × 22 = 88 is too big, so 4 goes into 87 exactly 21 times with 87 − 84 = 3 left over.
The remainder 3 is 3/4 of another 4, and 3 ÷ 4 = 0.75. So 87 ÷ 4 = 21 + 0.75 = 21.75.
Multiply back: 21 × 4 + 3 = 84 + 3 = 87. ✓
| Division | Answer |
|---|---|
| 86 ÷ 4 | 21 R 2 |
| 88 ÷ 4 | 22 |
| 87 ÷ 3 | 29 |
| 87 ÷ 5 | 17 R 2 |
| 85 ÷ 4 | 21 R 1 |
| 89 ÷ 4 | 22 R 1 |
| 87 ÷ 8 | 10 R 7 |
See also: factors of 87.
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