17 times 20 is 340. In symbols: 17 × 20 = 340, and 20 × 17 = 340 too.
17 × 20 means adding 17 to itself 20 times: that is 20 copies of 17, which add up to 340.
17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, ... (keep going to the 20th multiple). The 20th multiple of 17 is 340.
17 × 20 = 17 × 20 = 340 = 340.
Halve one number and double the other: 17 × 20 = 10 × 34 = 340.
340 ÷ 17 = 20
340 ÷ 20 = 17
340 is even. Prime factorization: 2 × 2 × 5 × 17.
| Multiplication | Answer |
|---|---|
| 16 × 20 | 320 |
| 18 × 20 | 360 |
| 17 × 19 | 323 |
| 17 × 21 | 357 |
| 17 × 22 | 374 |
| 17 × 18 | 306 |
| 19 × 20 | 380 |
| 15 × 20 | 300 |
Other numbers? Browse the multiplication table, the squares and cubes or the exponent calculator.