18 times 20 is 360. In symbols: 18 × 20 = 360, and 20 × 18 = 360 too.
18 × 20 means adding 18 to itself 20 times: that is 20 copies of 18, which add up to 360.
18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, ... (keep going to the 20th multiple). The 20th multiple of 18 is 360.
18 × 20 = 18 × 20 = 360 = 360.
Halve one number and double the other: 18 × 20 = 9 × 40 = 360.
360 ÷ 18 = 20
360 ÷ 20 = 18
360 is even. Prime factorization: 2 × 2 × 2 × 3 × 3 × 5.
| Multiplication | Answer |
|---|---|
| 17 × 20 | 340 |
| 19 × 20 | 380 |
| 18 × 19 | 342 |
| 18 × 21 | 378 |
| 18 × 22 | 396 |
| 18 × 18 | 324 |
| 20 × 20 | 400 |
| 16 × 20 | 320 |
See also: factors of 360.
Other numbers? Browse the multiplication table, the squares and cubes or the exponent calculator.