23 times 30 is 690. In symbols: 23 × 30 = 690, and 30 × 23 = 690 too.
23 × 30 means adding 23 to itself 30 times: that is 30 copies of 23, which add up to 690.
23, 46, 69, 92, 115, 138, 161, 184, 207, 230, 253, 276, ... (keep going to the 30th multiple). The 30th multiple of 23 is 690.
23 × 30 = 23 × 30 = 690 = 690.
Halve one number and double the other: 23 × 30 = 15 × 46 = 690.
690 ÷ 23 = 30
690 ÷ 30 = 23
690 is even. Prime factorization: 2 × 3 × 5 × 23.
| Multiplication | Answer |
|---|---|
| 22 × 30 | 660 |
| 24 × 30 | 720 |
| 23 × 29 | 667 |
| 23 × 28 | 644 |
| 25 × 30 | 750 |
| 21 × 30 | 630 |
Other numbers? Browse the multiplication table, the squares and cubes or the exponent calculator.