4 times 25 is 100. In symbols: 4 × 25 = 100, and 25 × 4 = 100 too.
4 × 25 means adding 4 to itself 25 times: that is 25 copies of 4, which add up to 100.
4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, ... (keep going to the 25th multiple). The 25th multiple of 4 is 100.
4 × 25 = 4 × 20 + 4 × 5 = 80 + 20 = 100.
Halve one number and double the other: 4 × 25 = 2 × 50 = 100.
100 ÷ 4 = 25
100 ÷ 25 = 4
100 is even. Prime factorization: 2 × 2 × 5 × 5.
| Multiplication | Answer |
|---|---|
| 3 × 25 | 75 |
| 5 × 25 | 125 |
| 4 × 24 | 96 |
| 4 × 26 | 104 |
| 4 × 27 | 108 |
| 4 × 23 | 92 |
| 6 × 25 | 150 |
| 2 × 25 | 50 |
See also: factors of 100.
Other numbers? Browse the multiplication table, the squares and cubes or the exponent calculator.