Video narration
Need a fast way to multiply by 25? Here’s the shortcut: 25 equals 100 divided by 4. So multiplying by 25 is the same as dividing by 4, then multiplying by 100. Example one: 68 times 25. First, 68 ÷ 4 = 17. Then 17 × 100 = 1700. So 68 × 25 = 1700. Example two: 124 times 25. 124 ÷ 4 = 31. Then 31 × 100 = 3100. What if the number isn’t divisible by 4? No problem—just divide normally, even if you get a decimal, then multiply by 100. Quick practice: 32 × 25? 32 ÷ 4 = 8, so 800. And 96 × 25? 96 ÷ 4 = 24, so 2400.