# Multiply by a Number between 100-109

Below is a really cool trick to multiply two numbers between 100-109. .

Look at the math problem 102 x 104 = ?

- Multiply one's digits.
- 4 x 2 = 8. It needs to be two digits so write 08.

- Add one's digits.
- 4 + 2 = 6. It needs to be two digits so write 06

- Write 1.

**ANSWER is 10608.**

Watch the math video below for a detailed explanation!

### Practice Math Problems

- What does 103 x 108 = ?
- What does 101 x 105 = ?
- What does 107 x 109 = ?
- What does 104 x 109 = ?
- What does 108 x 105 = ?
- What does 102 x 107 = ?
- What does 106 x 104 = ?