Squaring Numbers Ending in 5

The following is a quick trick for squaring any number ending in 5.

Look at the math problem 652 = ? Let's see how the trick works.

  • Take the first number (6) and multiply by the next number 6 x 7 = 42. Then just add 25 on the end.

ANSWER is 4225

It's as simple as that.

Watch the math video below for a detailed explanation!

Practice Math Problems

  1. What is 452 equal to?
  2. What is 652 equal to?
  3. What is 852 equal to?
  4. What is 152 equal to?
  5. What is 252 equal to?
  6. What is 352 equal to?
  7. What is 1052 equal to?
  8. What is 752 equal to?
  9. What is 952 equal to?
  10. What is 3052 equal to?