Multiply by 12-19

Mulitplying by teen numbers are extremely common so it's important to know this trick which makes things much easier.

Look at the math problem 12 x 47 = ?

• Multiply the one's digits.
  • 2 * 7 = 14
  • Write 4 and carry the 1.
• Multiply the one's digit of the teen (2) by the remaining number (4)
  • 2 * 4 = 8
  • Add this to the other number.
  • 8 + 47 = 55.
  • Add the 1 that you carried. 55 + 1 = 56.
  • Write 56.

ANSWER is 564.

Look at the math problem 14 x 263 = ?

• Multiply the one's digits.
  • 4 * 3 = 12
  • Write 2 and carry the 1.
• Multiply the one's digit of the teen (4) by the remaining numbers (26)
  • 4 * 26 = 104
  • Add this to the other number.
  • 104 + 263 = 367.
  • Add the 1 that you carried. 367 + 1 = 368.
  • Write 368.

ANSWER is 3682.

Watch the math video below for a detailed explanation!

Practice Math Problems

1. What does 12 x 36 = ?
2. What does 17 x 94 = ?
3. What does 13 x 134 = ?
4. What does 14 x 234 = ?
5. What does 18 x 31 = ?
6. What does 15 x 44 = ?