★Add Three-Digit Numbers Without Regrouping
Grade 2 Math Worksheet
NameDate
Find the sum.
PencilGoGrade 2 · Math · Place value operations
2nd Grade Add Three-Digit Numbers Without Regrouping worksheets
6 printable versionsOn LevelAbout 7 minutes eachFree · no account
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About this worksheet
Adding three-digit numbers is the same column method a child already uses for two-digit numbers, with one more place. Write the numbers with ones under ones, tens under tens and hundreds under hundreds, then add each column from the right. In this first sheet no column adds to ten or more, so nothing has to be carried, and the child can focus on lining up the digits.
For 342 + 253, 2 + 3 = 5 ones, 4 + 5 = 9 tens and 3 + 2 = 5 hundreds, which is 595. Some sums add a two-digit number to a three-digit number, such as 25 + 703, where lining up the places is the whole challenge. Ask your child to say the value of each column as they go.
What your child will learn
- Add three-digit numbers in columns
- Line up ones, tens and hundreds
- Add a two-digit number to a three-digit number
Common Core standard: 2.NBT.B.7
Worked example
For 342 + 253, add the ones: 2 + 3 = 5. Add the tens: 4 + 5 = 9. Add the hundreds: 3 + 2 = 5. The sum is 595.
Common mistake
Lining the numbers up from the left, so a two-digit number's tens sit under the hundreds.
Helpful hint
Line up the ones, tens and hundreds. Add each column from the right.
Questions parents ask
What is the most common mistake with add three-digit numbers without regrouping?
Lining the numbers up from the left, so a two-digit number's tens sit under the hundreds.
How can I help my child with add three-digit numbers without regrouping?
Line up the ones, tens and hundreds. Add each column from the right.
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: Add Up to Four Two-Digit Numbers · Ten and Hundred More or Less
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- Place value operationsSubtract Across Zeros6 printable versions
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