5 times 28 is 140. In symbols: 5 × 28 = 140, and 28 × 5 = 140 too.
5 × 28 means adding 5 to itself 28 times: that is 28 copies of 5, which add up to 140.
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ... (keep going to the 28th multiple). The 28th multiple of 5 is 140.
5 × 28 = 5 × 20 + 5 × 8 = 100 + 40 = 140.
Halve one number and double the other: 5 × 28 = 14 × 10 = 140.
140 ÷ 5 = 28
140 ÷ 28 = 5
140 is even. Prime factorization: 2 × 2 × 5 × 7.
| Multiplication | Answer |
|---|---|
| 4 × 28 | 112 |
| 6 × 28 | 168 |
| 5 × 27 | 135 |
| 5 × 29 | 145 |
| 5 × 30 | 150 |
| 5 × 26 | 130 |
| 7 × 28 | 196 |
| 3 × 28 | 84 |
See also: factors of 140.
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