7 times 20 is 140. In symbols: 7 × 20 = 140, and 20 × 7 = 140 too.
7 × 20 means adding 7 to itself 20 times: that is 20 copies of 7, which add up to 140.
7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, ... (keep going to the 20th multiple). The 20th multiple of 7 is 140.
7 × 20 = 7 × 20 = 140 = 140.
Halve one number and double the other: 7 × 20 = 10 × 14 = 140.
140 ÷ 7 = 20
140 ÷ 20 = 7
140 is even. Prime factorization: 2 × 2 × 5 × 7.
| Multiplication | Answer |
|---|---|
| 6 × 20 | 120 |
| 8 × 20 | 160 |
| 7 × 19 | 133 |
| 7 × 21 | 147 |
| 7 × 22 | 154 |
| 7 × 18 | 126 |
| 9 × 20 | 180 |
| 5 × 20 | 100 |
See also: factors of 140.
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