★Three-Digit Addition With Regrouping
Grade 2 Math Worksheet
NameDate
Find the sum.
PencilGoGrade 2 · Math · Addition
2nd Grade Three-Digit Addition With Regrouping worksheets
6 printable versionsOn LevelAbout 9 minutes eachFree · no account
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About this worksheet
Adding three-digit numbers with regrouping uses the same carry a child learned with two-digit sums, now in two places. When the ones add to ten or more, one ten is carried to the tens column, and when the tens add to ten or more, one hundred is carried to the hundreds column. This worksheet has twenty sums written in columns, each needing a carry in the ones, the tens or both, with sums under 1,000.
Some add a two-digit number to a three-digit number, such as 312 + 99. Ask your child to write the small carry above the next column, and to check by estimating with the nearest hundreds: 312 + 99 is close to 300 + 100. Estimating first also helps a child notice when a carry has been forgotten, since the answer will be far too small.
What your child will learn
- Add three-digit numbers in columns with a carry
- Carry a ten and a hundred
- Estimate to check the sum
Common Core standard: 2.NBT.B.7
Worked example
For 274 + 167, add the ones: 4 + 7 = 11, write 1 and carry a ten. Tens: 1 + 7 + 6 = 14, write 4 and carry a hundred. Hundreds: 1 + 2 + 1 = 4. The sum is 441.
Common mistake
Forgetting to add the carried ten or hundred to the next column.
Helpful hint
Add the ones first. Carry a ten or a hundred when a column makes ten or more.
Questions parents ask
What is the most common mistake with three-digit addition with regrouping?
Forgetting to add the carried ten or hundred to the next column.
How can I help my child with three-digit addition with regrouping?
Add the ones first. Carry a ten or a hundred when a column makes ten or more.
Are these 2nd grade math worksheets free to print?
Yes. All 6 printable versions on this page are free to download and print, with no account needed.
Similar: Addition Within 100 · Two-Digit Addition
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