★Subtraction Within 100
Grade 2 Math Worksheet
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PencilGoGrade 2 · Math · Subtraction
2nd Grade Subtraction Within 100 worksheets
6 printable versionsOn LevelAbout 7 minutes eachFree · no account
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About this worksheet
Subtraction within 100 starts with problems that need no regrouping: every digit on top is at least as big as the digit below it. Write the numbers in a column with the ones under the ones, subtract the ones, then subtract the tens. This worksheet has fifteen differences in columns. Some take a one-digit number from a two-digit number, such as 45 - 4, some take away zero or whole tens, such as 63 - 0 and 81 - 60, and the rest take away another two-digit number.
Ask your child to say each step aloud, ones first. Check an answer by adding it back to the number taken away. Fluent, careful column subtraction is the base for regrouping, which comes next, so it is worth getting these right first.
What your child will learn
- Subtract in columns with no regrouping
- Subtract a one-digit number, zero or whole tens
- Check by adding back
Common Core standard: 2.NBT.B.5
Worked example
For 78 - 35, subtract the ones: 8 - 5 = 3. Subtract the tens: 7 - 3 = 4. The difference is 43.
Common mistake
Subtracting the smaller digit from the larger one in each column, even when the larger digit is the bottom one.
Helpful hint
Subtract the ones, then the tens. Add back to check.
Questions parents ask
What is the most common mistake with subtraction within 100?
Subtracting the smaller digit from the larger one in each column, even when the larger digit is the bottom one.
How can I help my child with subtraction within 100?
Subtract the ones, then the tens. Add back to check.
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: Two-Digit Subtraction
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