11 times 18 is 198. In symbols: 11 × 18 = 198, and 18 × 11 = 198 too.
11 × 18 means adding 11 to itself 18 times: that is 18 copies of 11, which add up to 198.
11, 22, 33, 44, 55, 66, 77, 88, 99, 110, 121, 132, ... (keep going to the 18th multiple). The 18th multiple of 11 is 198.
11 × 18 = 11 × 10 + 11 × 8 = 110 + 88 = 198.
Halve one number and double the other: 11 × 18 = 9 × 22 = 198.
198 ÷ 11 = 18
198 ÷ 18 = 11
198 is even. Prime factorization: 2 × 3 × 3 × 11.
| Multiplication | Answer |
|---|---|
| 10 × 18 | 180 |
| 12 × 18 | 216 |
| 11 × 17 | 187 |
| 11 × 19 | 209 |
| 11 × 20 | 220 |
| 11 × 16 | 176 |
| 13 × 18 | 234 |
| 9 × 18 | 162 |
See also: factors of 198.
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