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Two-digit subtraction with regrouping worksheets

Twenty two-digit subtraction problems where at least one column borrows, like 62 − 27, in three versions with keys. Every problem needs the trade.

Subtraction: within 100 (two-digit)

NameDate

Subtract.

Sheet AFree at teach.peabody.kids

Subtraction: within 100 (two-digit)

NameDate

Subtract.

Sheet BFree at teach.peabody.kids

Subtraction: within 100 (two-digit)

NameDate

Subtract.

Sheet CFree at teach.peabody.kids

Answer key

Sheet A

  1. 27
  2. 55
  3. 19
  4. 39
  5. 23
  6. 15
  7. 27
  8. 48
  9. 39
  10. 59
  11. 1
  12. 3
  13. 77
  14. 35
  15. 7
  16. 4
  17. 8
  18. 8
  19. 66
  20. 18

Sheet B

  1. 6
  2. 49
  3. 3
  4. 5
  5. 29
  6. 29
  7. 24
  8. 4
  9. 18
  10. 45
  11. 59
  12. 29
  13. 9
  14. 51
  15. 8
  16. 46
  17. 7
  18. 19
  19. 3
  20. 45

Sheet C

  1. 49
  2. 23
  3. 5
  4. 8
  5. 38
  6. 14
  7. 5
  8. 4
  9. 9
  10. 8
  11. 2
  12. 28
  13. 6
  14. 24
  15. 62
  16. 29
  17. 3
  18. 7
  19. 17
  20. 19
Answer keyFree at teach.peabody.kids

Subtraction: 20 problems a sheet, 3 versions that do not repeat each other where the numbers allow.

How to use it

  1. Look at the sheet: it is a real, printable sheet. Switch between Sheet A, B and C, or press New numbers (N) for a fresh set.
  2. Change how many problems, how many versions, and whether the key prints. Settings stay in this browser; Share copies a link that rebuilds the same sheets.
  3. Press Print sheet A and key, or Print all. The answer key prints on its own page, so you can keep it back.

Ideas for class

  • Work the first three problems with base-ten blocks, trading a rod for ten cubes, before anyone writes a digit.
  • Teach students to cross out the tens digit and write one less above it, with a small 1 beside the ones digit. Do it the same way every time.
  • Always finish with the addition check. It turns borrowing into something a student can verify alone.

Related

Questions

Is regrouping the same as borrowing?

Yes. Borrowing is the older word. Regrouping describes what is really happening: one ten is traded for ten ones, and nothing is borrowed or returned.

What if a student is still unsure?

Drop back to the sheet without regrouping for a day, then return. You can also set the sheet to Some with, some without in the maker so that the borrowing problems arrive among easier ones.

Are the answer keys checked?

Each answer is worked out by the code that wrote the problem, and our tests recompute every answer a second way and compare. Please still look over the key before you grade a class set.

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What this worksheet covers

Subtraction with regrouping is where many students lose confidence, because the digit on top is smaller than the digit below it and the column cannot be subtracted as it stands. Each problem here needs a ten to be broken into ten ones. The sheet gives repeated practice with that single move, which is more useful than a mixed sheet in which most answers do not need it.

Who it is for

This is a second-grade skill (Common Core 2.NBT.B.5 and 2.NBT.B.7). Students should be secure on subtraction without regrouping first, because this sheet assumes they can already line up columns. In third grade the same idea reaches three-digit numbers.

Subtracting two-digit numbers where at least one column borrows · grade 2

A worked example

62 − 27. The ones digit 2 is smaller than 7, so break one ten: 62 becomes 5 tens and 12 ones. Ones: 12 − 7 = 5. Tens: 5 − 2 = 3. The answer is 35. Check: 35 + 27 = 62.

Mistakes to watch for

  • Subtracting the smaller digit from the larger, so 62 − 27 becomes 45 because 7 − 2 = 5 and 6 − 2 = 4. This is the most common error in the topic.
  • Borrowing and forgetting to reduce the tens digit by one. An estimate of 60 − 30 = 30 shows the answer should be near 35, not 45.

Make it your own

This sheet is one setting of the math worksheet generator. Open it there to change the skill, the range of numbers or the heading, or to mix several skills on one sheet.