🚀 2nd Grade · Free printable

Three-Digit Subtraction Worksheets (Within 1,000)

Three-digit subtraction can regroup twice: a ten into ones, and a hundred into tens. Every problem on these worksheets subtracts from a number up to 1,000.

Watch for zeros in the middle, like 209 − 143. With 0 tens there is nothing to take from, so a hundred has to be regrouped into ten tens first. This is where most mistakes happen, and it is worth practicing slowly.

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Sample problems

  1. 628 − 533 = _____
  2. 594 − 223 = _____
  3. 957 − 701 = _____
  4. 369 − 241 = _____
  5. 918 − 716 = _____
  6. 906 − 407 = _____
  7. 926 − 674 = _____
  8. 309 − 262 = _____

Worked example

617 − 383

  1. Ones: 7 − 3 = 4.
  2. Tens: 1 − 8 does not work. Regroup one hundred into ten tens: 5 hundreds and 11 tens.
  3. Tens: 11 − 8 = 3. Hundreds: 5 − 3 = 2.
  4. So 617 − 383 = 234. Check: 234 + 383 = 617. ✓

Common mistakes

  • Regrouping across a zero. In 209 − 143 the tens digit is 0, so a hundred must become 10 tens before you can subtract 4 tens.
  • Subtracting the smaller digit from the bigger one in each column, which ignores regrouping completely.

Tips for practicing at home

  • Count up on an open number line: from 383 to 400 is 17, to 600 is 200 more, and to 617 is 17 more. 17 + 200 + 17 = 234.
  • Always check by adding.
  • Model with base-ten blocks, physically trading a hundred flat for ten rods.

Common Core standards

2.NBT.B.7
Add and subtract within 1000, using concrete models or drawings and strategies based on place value.

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