25 x 100 = 2500
25 times 100 is 2500. Twenty-five is a quarter of a hundred, so the answer is a quarter of 10,000. It is also 50 squared, since 50 x 50 = 2500.
25 × 100 = 2,500
Adding 25 to itself 100 times gives the same answer.
A quarter of ten thousand
100 x 100 is 10,000. Twenty-five is a quarter of a hundred, so 25 x 100 is a quarter of 10,000, which is 2500.
That shortcut is the reason to remember this one. For anything times 25, multiply by 100 and take a quarter. 25 x 36 becomes 3600 divided by 4, which is 900. 25 x 16 becomes 1600 divided by 4, which is 400.
2500 is a square number
2500 is 50 x 50. Most answers on this site are not squares, so it is worth noting: the square root of 2500 is exactly 50, with nothing after the decimal point. It is also the area of a 50 by 50 square in whatever unit you are working in.
Quarters, literally
A hundred US quarters is 2500 cents, which is 25 dollars. The coin and the multiplier happen to be the same number, which is part of why the quarter-of-a-hundred idea sticks so easily.
One warning comes with every times-25 lookup: 25 percent of 100 is 25, not 2500. Percent divides by a hundred where this multiplication does the opposite.
Nearby answers
- 50 x 100 = 5000, exactly double this answer.
- 100 x 12 = 1200
- All the multiplication answers