Let’s solve each subtraction problem step by step. Remember: subtract the ones first, then the tens. If the top number in the ones place is smaller than the bottom one, we need to regroup (borrow) from the tens place.
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1) 34 - 18
Ones: 4 - 8 → can’t do, so borrow 1 ten → 14 - 8 = 6
Tens: 2 (after borrowing) - 1 = 1
→
16
2) 42 - 15
Ones: 2 - 5 → borrow → 12 - 5 = 7
Tens: 3 - 1 = 2
→
27
3) 51 - 34
Ones: 1 - 4 → borrow → 11 - 4 = 7
Tens: 4 - 3 = 1
→
17
4) 45 - 19
Ones: 5 - 9 → borrow → 15 - 9 = 6
Tens: 3 - 1 = 2
→
26
5) 50 - 36
Ones: 0 - 6 → borrow → 10 - 6 = 4
Tens: 4 - 3 = 1
→
14
6) 61 - 23
Ones: 1 - 3 → borrow → 11 - 3 = 8
Tens: 5 - 2 = 3
→
38
7) 45 - 9
Ones: 5 - 9 → borrow → 15 - 9 = 6
Tens: 3 - 0 = 3
→
36
8) 53 - 26
Ones: 3 - 6 → borrow → 13 - 6 = 7
Tens: 4 - 2 = 2
→
27
9) 31 - 26
Ones: 1 - 6 → borrow → 11 - 6 = 5
Tens: 2 - 2 = 0
→
5
10) 64 - 38
Ones: 4 - 8 → borrow → 14 - 8 = 6
Tens: 5 - 3 = 2
→
26
11) 70 - 47
Ones: 0 - 7 → borrow → 10 - 7 = 3
Tens: 6 - 4 = 2
→
23
12) 63 - 19
Ones: 3 - 9 → borrow → 13 - 9 = 4
Tens: 5 - 1 = 4
→
44
13) 81 - 46
Ones: 1 - 6 → borrow → 11 - 6 = 5
Tens: 7 - 4 = 3
→
35
14) 73 - 37
Ones: 3 - 7 → borrow → 13 - 7 = 6
Tens: 6 - 3 = 3
→
36
15) 85 - 36
Ones: 5 - 6 → borrow → 15 - 6 = 9
Tens: 7 - 3 = 4
→
49
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Final Answer:
1) 16
2) 27
3) 17
4) 26
5) 14
6) 38
7) 36
8) 27
9) 5
10) 26
11) 23
12) 44
13) 35
14) 36
15) 49
Parent Tip: Review the logic above to help your child master the concept of subtraction with borrowing worksheet 1st.
