Let's solve each of the double-digit subtraction problems on this worksheet step by step, following the method shown in the example.
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Example: 63 - 39
- We subtract ones first: 3 - 9 → can't do it, so we
regroup.
- Borrow 1 from the tens (6 becomes 5), and add 10 to the ones (3 becomes 13).
- Now: 13 - 9 = 4
- Then: 5 - 3 = 2
- So,
63 - 39 = 24
-
Did you need to regroup? YES (Y)
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Now let’s solve the rest:
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1. 85 - 57
Step-by-step:
- Ones place: 5 - 7 → can’t do it → need to
regroup
- Borrow 1 from the tens: 8 becomes 7, and 5 becomes 15
- 15 - 7 = 8
- Tens place: 7 - 5 = 2
- So,
85 - 57 = 28
-
Did you need to regroup? YES (Y)
✔ Answer:
28, Regroup:
Y
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2. 48 - 26
Step-by-step:
- Ones place: 8 - 6 = 2 → no regrouping needed
- Tens place: 4 - 2 = 2
- So,
48 - 26 = 22
-
Did you need to regroup? NO (N)
✔ Answer:
22, Regroup:
N
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3. 71 - 46
Step-by-step:
- Ones place: 1 - 6 → can’t do it → need to
regroup
- Borrow 1 from the tens: 7 becomes 6, 1 becomes 11
- 11 - 6 = 5
- Tens place: 6 - 4 = 2
- So,
71 - 46 = 25
-
Did you need to regroup? YES (Y)
✔ Answer:
25, Regroup:
Y
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4. 67 - 34
Step-by-step:
- Ones place: 7 - 4 = 3 → no regrouping
- Tens place: 6 - 3 = 3
- So,
67 - 34 = 33
-
Did you need to regroup? NO (N)
✔ Answer:
33, Regroup:
N
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5. 92 - 18
Step-by-step:
- Ones place: 2 - 8 → can’t do it → need to
regroup
- Borrow 1 from the tens: 9 becomes 8, 2 becomes 12
- 12 - 8 = 4
- Tens place: 8 - 1 = 7
- So,
92 - 18 = 74
-
Did you need to regroup? YES (Y)
✔ Answer:
74, Regroup:
Y
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✔ Final Answers:
| Problem | Answer | Regroup? |
|--------|--------|---------|
| 85 - 57 |
28 | Y |
| 48 - 26 |
22 | N |
| 71 - 46 |
25 | Y |
| 67 - 34 |
33 | N |
| 92 - 18 |
74 | Y |
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🔍 Summary:
You only need to
regroup when the bottom digit in the ones place is larger than the top digit. In those cases, borrow 1 from the tens place.
Let me know if you'd like a printable version or visual steps!
Parent Tip: Review the logic above to help your child master the concept of teaching subtraction with regrouping worksheet.