3 times 5 is 15. In symbols: 3 × 5 = 15, and 5 × 3 = 15 too.
3 × 5 means adding 3 to itself 5 times: 3 + 3 + 3 + 3 + 3 = 15.
3, 6, 9, 12, 15. The 5th multiple of 3 is 15.
3 × 5 = 3 × 2 + 3 × 3 = 6 + 9 = 15.
15 ÷ 3 = 5
15 ÷ 5 = 3
15 is odd. Prime factorization: 3 × 5.
| Multiplication | Answer |
|---|---|
| 2 × 5 | 10 |
| 4 × 5 | 20 |
| 3 × 4 | 12 |
| 3 × 6 | 18 |
| 3 × 7 | 21 |
| 3 × 3 | 9 |
| 5 × 5 | 25 |
See also: factors of 15.
Other numbers? Browse the multiplication table, the squares and cubes or the exponent calculator.