★Two-Digit Subtraction
Grade 2 Math Worksheet - Challenge Me
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Find the difference.
PencilGoGrade 2 · Math · Subtraction
2nd Grade Two-Digit Subtraction worksheets
6 printable versionsChallenge MeAbout 5 minutes eachFree · no account
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About this worksheet
Subtracting with regrouping is needed when the ones digit on top is smaller than the ones digit below it, as in 71 - 49. The child trades one ten for ten ones, which makes 11 ones, subtracts 11 - 9 = 2, and then subtracts the tens that are left: 6 - 4 = 2. The answer is 22. This worksheet has twelve differences written in columns, and every one needs a regroup, including a few that start with a number ending in zero, such as 20 - 16.
Ask your child to cross out the tens digit and write the smaller one, then say the new ones number out loud. Check by adding the answer to the number taken away.
What your child will learn
- Regroup a ten as ten ones
- Subtract in columns when the top ones digit is smaller
- Check a difference by adding
Common Core standard: 2.NBT.B.5
Worked example
For 71 - 49, 1 is less than 9, so trade a ten: 71 becomes 6 tens and 11 ones. 11 - 9 = 2 and 6 - 4 = 2. The difference is 22.
Common mistake
Subtracting the smaller ones digit from the larger (9 - 1) instead of regrouping.
Helpful hint
If the top ones digit is too small, trade a ten for ten ones.
Questions parents ask
What is the most common mistake with two-digit subtraction?
Subtracting the smaller ones digit from the larger (9 - 1) instead of regrouping.
How can I help my child with two-digit subtraction?
If the top ones digit is too small, trade a ten for ten ones.
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: Subtraction Within 100
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