Difference of Squared Numbers
Many times you will subtract squared numbers so this trick will help make your life easier.
Look at the math problem 542 - 512 = ? .
- Add the two numbers together..
- 54 + 51 = 105.
- Subtract the right number from the left number.
- 54 - 51 = 3.
- Multiply these two answers.
- 105 x 3 = 315.
ANSWER is 315.
Look at the math problem 342 - 212 = ? .
- Add the two numbers together..
- 34 + 21 = 55.
- Subtract the right number from the left number.
- 34 - 21 = 13.
- Multiply these two answers.
- 55 x 13 = 715.
ANSWER is 715.
Watch the math video below for a detailed explanation!
Practice Math Problems
- What does 632 - 572 = ?
- What does 252 - 212 = ?
- What does 722 - 642 = ?
- What does 332 - 412 = ?
- What does 132 - 232 = ?