3-Digit / 1-Digit

Dividing 3-digit numbers

  • This uses the same bus stop method as 2-digit division.
  • There are now 3 digits to work through.
  • Start from the left and work right.
  • Carry any remainders to the next digit.
  • Take your time — one digit at a time.

Example: 156 / 3

  1. Write 3 outside. Write 156 inside.
  2. Hundreds: 3 into 1 does not go. Combine with next digit: 15.
  3. 3 into 15 = 5. Write 5 on top.
  4. Ones: 3 into 6 = 2. Write 2 on top.
  5. Answer: 156 / 3 = 52.

Let us try: 248 / 4

  • Write 4 outside. Write 248 inside.
  • Hundreds: 4 into 2 does not go. Combine: 24.
  • 4 into 24 = 6. Write 6 on top.
  • Ones: 4 into 8 = 2. Write 2 on top.
  • Answer: 248 / 4 = 62.

Now try these yourself

  • 126 / 3 = ? (3 into 12 = 4, then 3 into 6 = 2)
  • 175 / 5 = ? (5 into 17 = 3 r 2, carry 2 to make 25, 5 into 25 = 5)
  • 432 / 4 = ? (4 into 4 = 1, 4 into 3 needs carry, 4 into 32 = 8)
  • Work left to right. Carry remainders to the next digit.
Start the interactive 3-Digit / 1-Digit lesson →