Let’s solve each subtraction problem step by step. Remember: subtract the ones first, then the tens. If you can’t subtract the ones (like 3 - 5), borrow from the tens place.
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1) 43 - 25
Ones: 3 - 5 → Can’t do it. Borrow 1 from 4 (tens). Now 13 - 5 = 8
Tens: 3 (after borrowing) - 2 = 1
→
18
2) 52 - 18
Ones: 2 - 8 → Can’t do it. Borrow 1 from 5. Now 12 - 8 = 4
Tens: 4 - 1 = 3
→
34
3) 66 - 34
Ones: 6 - 4 = 2
Tens: 6 - 3 = 3
→
32
4) 54 - 39
Ones: 4 - 9 → Can’t do it. Borrow 1 from 5. Now 14 - 9 = 5
Tens: 4 - 3 = 1
→
15
5) 70 - 34
Ones: 0 - 4 → Can’t do it. Borrow 1 from 7. Now 10 - 4 = 6
Tens: 6 - 3 = 3
→
36
6) 62 - 28
Ones: 2 - 8 → Can’t do it. Borrow 1 from 6. Now 12 - 8 = 4
Tens: 5 - 2 = 3
→
34
7) 52 - 7
This is like 52 - 07.
Ones: 2 - 7 → Can’t do it. Borrow 1 from 5. Now 12 - 7 = 5
Tens: 4 - 0 = 4
→
45
8) 72 - 37
Ones: 2 - 7 → Can’t do it. Borrow 1 from 7. Now 12 - 7 = 5
Tens: 6 - 3 = 3
→
35
9) 67 - 26
Ones: 7 - 6 = 1
Tens: 6 - 2 = 4
→
41
10) 78 - 46
Ones: 8 - 6 = 2
Tens: 7 - 4 = 3
→
32
11) 80 - 33
Ones: 0 - 3 → Can’t do it. Borrow 1 from 8. Now 10 - 3 = 7
Tens: 7 - 3 = 4
→
47
12) 69 - 7
Like 69 - 07.
Ones: 9 - 7 = 2
Tens: 6 - 0 = 6
→
62
13) 91 - 44
Ones: 1 - 4 → Can’t do it. Borrow 1 from 9. Now 11 - 4 = 7
Tens: 8 - 4 = 4
→
47
14) 67 - 55
Ones: 7 - 5 = 2
Tens: 6 - 5 = 1
→
12
15) 83 - 68
Ones: 3 - 8 → Can’t do it. Borrow 1 from 8. Now 13 - 8 = 5
Tens: 7 - 6 = 1
→
15
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Final Answer:
1) 18
2) 34
3) 32
4) 15
5) 36
6) 34
7) 45
8) 35
9) 41
10) 32
11) 47
12) 62
13) 47
14) 12
15) 15
Parent Tip: Review the logic above to help your child master the concept of math subtraction worksheet 2nd grade.
