🚀 2nd Grade · Free printable

Addition With Regrouping Worksheets

Regrouping (often called carrying) happens when a column adds up to 10 or more. Ten ones are traded for one ten, which moves to the tens column.

Every problem on these worksheets adds two two-digit numbers and needs regrouping in the ones column. Some sums go past 100, which is a nice stretch toward adding within 1,000.

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Sample problems

  1. 37 + 24 = _____
  2. 22 + 38 = _____
  3. 38 + 82 = _____
  4. 37 + 19 = _____
  5. 17 + 37 = _____
  6. 44 + 78 = _____
  7. 59 + 53 = _____
  8. 36 + 84 = _____

Worked example

48 + 35

  1. Add the ones: 8 + 5 = 13. That is 1 ten and 3 ones.
  2. Write the 3 in the ones place and regroup the 1 ten into the tens column.
  3. Add the tens: 4 + 3 + the regrouped 1 = 8 tens.
  4. So 48 + 35 = 83.

Common mistakes

  • Writing the whole 13 in the ones place, giving an answer like 713. Only one digit fits in each place.
  • Forgetting the regrouped ten and answering 73. Writing a small 1 above the tens column is a good reminder.

Tips for practicing at home

  • Use base-ten blocks or coins: trade 10 pennies for a dime when you have 10 or more.
  • Say "regroup" or "trade" rather than just "carry the 1", so the meaning sticks.
  • Estimate first: 48 + 35 is about 50 + 35, so 83 makes sense.

Common Core standards

2.NBT.B.5
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and the relationship between addition and subtraction.
2.NBT.B.7
Add and subtract within 1000, using strategies based on place value.

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