5 times 9 is 45. In symbols: 5 × 9 = 45, and 9 × 5 = 45 too.
5 × 9 means adding 5 to itself 9 times: 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 = 45.
5, 10, 15, 20, 25, 30, 35, 40, 45. The 9th multiple of 5 is 45.
5 × 9 = 5 × 4 + 5 × 5 = 20 + 25 = 45.
45 ÷ 5 = 9
45 ÷ 9 = 5
45 is odd. Prime factorization: 3 × 3 × 5.
| Multiplication | Answer |
|---|---|
| 4 × 9 | 36 |
| 6 × 9 | 54 |
| 5 × 8 | 40 |
| 5 × 10 | 50 |
| 5 × 11 | 55 |
| 5 × 7 | 35 |
| 7 × 9 | 63 |
| 3 × 9 | 27 |
See also: factors of 45.
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