16 times 25 is 400. In symbols: 16 × 25 = 400, and 25 × 16 = 400 too.
16 × 25 means adding 16 to itself 25 times: that is 25 copies of 16, which add up to 400.
16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, ... (keep going to the 25th multiple). The 25th multiple of 16 is 400.
16 × 25 = 16 × 20 + 16 × 5 = 320 + 80 = 400.
Halve one number and double the other: 16 × 25 = 8 × 50 = 400.
400 ÷ 16 = 25
400 ÷ 25 = 16
400 is even. Prime factorization: 2 × 2 × 2 × 2 × 5 × 5.
| Multiplication | Answer |
|---|---|
| 15 × 25 | 375 |
| 17 × 25 | 425 |
| 16 × 24 | 384 |
| 16 × 26 | 416 |
| 16 × 27 | 432 |
| 16 × 23 | 368 |
| 18 × 25 | 450 |
| 14 × 25 | 350 |
See also: factors of 400.
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