Let's solve each of the addition and subtraction problems on the worksheet
without regrouping. This means we will only add or subtract numbers where the sum in the ones place doesn't exceed 9 (for addition), and for subtraction, the top digit in each column is greater than or equal to the bottom digit.
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Addition Problems
1.
81 + 18
- Ones: 1 + 8 = 9
- Tens: 8 + 1 = 9
-
Answer: 99
2.
23 + 12
- Ones: 3 + 2 = 5
- Tens: 2 + 1 = 3
-
Answer: 35
3.
12 + 85
- Ones: 2 + 5 = 7
- Tens: 1 + 8 = 9
-
Answer: 97
4.
25 + 11
- Ones: 5 + 1 = 6
- Tens: 2 + 1 = 3
-
Answer: 36
5.
13 + 32
- Ones: 3 + 2 = 5
- Tens: 1 + 3 = 4
-
Answer: 45
6.
28 + 71
- Ones: 8 + 1 = 9
- Tens: 2 + 7 = 9
-
Answer: 99
7.
54 + 42
- Ones: 4 + 2 = 6
- Tens: 5 + 4 = 9
-
Answer: 96
8.
62 + 30
- Ones: 2 + 0 = 2
- Tens: 6 + 3 = 9
-
Answer: 92
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Subtraction Problems
9.
83 - 80
- Ones: 3 - 0 = 3
- Tens: 8 - 8 = 0
-
Answer: 3
10.
35 - 11
- Ones: 5 - 1 = 4
- Tens: 3 - 1 = 2
-
Answer: 24
11.
88 - 60
- Ones: 8 - 0 = 8
- Tens: 8 - 6 = 2
-
Answer: 28
12.
81 - 51
- Ones: 1 - 1 = 0
- Tens: 8 - 5 = 3
-
Answer: 30
13.
17 - 16
- Ones: 7 - 6 = 1
- Tens: 1 - 1 = 0
-
Answer: 1
14.
47 - 15
- Ones: 7 - 5 = 2
- Tens: 4 - 1 = 3
-
Answer: 32
15.
76 - 55
- Ones: 6 - 5 = 1
- Tens: 7 - 5 = 2
-
Answer: 21
16.
57 - 46
- Ones: 7 - 6 = 1
- Tens: 5 - 4 = 1
-
Answer: 11
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✔ Final Answers:
####
Addition:
1. 81 + 18 =
99
2. 23 + 12 =
35
3. 12 + 85 =
97
4. 25 + 11 =
36
5. 13 + 32 =
45
6. 28 + 71 =
99
7. 54 + 42 =
96
8. 62 + 30 =
92
####
Subtraction:
9. 83 - 80 =
3
10. 35 - 11 =
24
11. 88 - 60 =
28
12. 81 - 51 =
30
13. 17 - 16 =
1
14. 47 - 15 =
32
15. 76 - 55 =
21
16. 57 - 46 =
11
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✔ All problems were solved
without regrouping, as required. Each step involves simple digit-by-digit operations.
Let me know if you'd like this formatted into a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of addition and subtraction worksheet without.
