6 times 21 is 126. In symbols: 6 × 21 = 126, and 21 × 6 = 126 too.
6 × 21 means adding 6 to itself 21 times: that is 21 copies of 6, which add up to 126.
6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, ... (keep going to the 21th multiple). The 21th multiple of 6 is 126.
6 × 21 = 6 × 20 + 6 × 1 = 120 + 6 = 126.
Halve one number and double the other: 6 × 21 = 3 × 42 = 126.
126 ÷ 6 = 21
126 ÷ 21 = 6
126 is even. Prime factorization: 2 × 3 × 3 × 7.
| Multiplication | Answer |
|---|---|
| 5 × 21 | 105 |
| 7 × 21 | 147 |
| 6 × 20 | 120 |
| 6 × 22 | 132 |
| 6 × 23 | 138 |
| 6 × 19 | 114 |
| 8 × 21 | 168 |
| 4 × 21 | 84 |
See also: factors of 126.
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