9 times 20 is 180. In symbols: 9 × 20 = 180, and 20 × 9 = 180 too.
9 × 20 means adding 9 to itself 20 times: that is 20 copies of 9, which add up to 180.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, ... (keep going to the 20th multiple). The 20th multiple of 9 is 180.
9 × 20 = 9 × 20 = 180 = 180.
Halve one number and double the other: 9 × 20 = 10 × 18 = 180.
180 ÷ 9 = 20
180 ÷ 20 = 9
180 is even. Prime factorization: 2 × 2 × 3 × 3 × 5.
| Multiplication | Answer |
|---|---|
| 8 × 20 | 160 |
| 10 × 20 | 200 |
| 9 × 19 | 171 |
| 9 × 21 | 189 |
| 9 × 22 | 198 |
| 9 × 18 | 162 |
| 11 × 20 | 220 |
| 7 × 20 | 140 |
See also: factors of 180.
Other numbers? Browse the multiplication table, the squares and cubes or the exponent calculator.