31 multiplied by 21 is 651
31 × 21 = 651
Explanation: Multiplication is repeated addition. So, 31 × 21 means adding 31, 21 times:
31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 + 31 = 651
Word Problem Style
If you have 21 boxes and each box contains 31 apples, then the total number of apples is 651.
Quick Facts
- 31 is called the multiplicand.
- 21 is called the multiplier.
- The result, 651, is called the product.
Multiplication Table for 31
| 31 × N | Result |
|---|---|
| 31 × 1 | 31 |
| 31 × 2 | 62 |
| 31 × 3 | 93 |
| 31 × 4 | 124 |
| 31 × 5 | 155 |
| 31 × 6 | 186 |
| 31 × 7 | 217 |
| 31 × 8 | 248 |
| 31 × 9 | 279 |
| 31 × 10 | 310 |
| 31 × 11 | 341 |
| 31 × 12 | 372 |