9 times 25 is 225. In symbols: 9 × 25 = 225, and 25 × 9 = 225 too.
9 × 25 means adding 9 to itself 25 times: that is 25 copies of 9, which add up to 225.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, ... (keep going to the 25th multiple). The 25th multiple of 9 is 225.
9 × 25 = 9 × 20 + 9 × 5 = 180 + 45 = 225.
225 ÷ 9 = 25
225 ÷ 25 = 9
225 is odd. Prime factorization: 3 × 3 × 5 × 5.
| Multiplication | Answer |
|---|---|
| 8 × 25 | 200 |
| 10 × 25 | 250 |
| 9 × 24 | 216 |
| 9 × 26 | 234 |
| 9 × 27 | 243 |
| 9 × 23 | 207 |
| 11 × 25 | 275 |
| 7 × 25 | 175 |
See also: factors of 225.
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