Let’s solve each problem step by step. We are given an addition equation with one missing number. To find the missing number, we subtract the known addend from the total (the number in the circle).
We’ll go through all 20 problems:
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1. 16 = 8 + □ → 16 - 8 =
8
2. 27 = □ + 8 → 27 - 8 =
19
3. 38 = 6 + □ → 38 - 6 =
32
4. 46 = □ + 20 → 46 - 20 =
26
5. 57 = 27 + □ → 57 - 27 =
30
6. 60 = □ + 20 → 60 - 20 =
40
7. 34 = 29 + □ → 34 - 29 =
5
8. 42 = □ + 14 → 42 - 14 =
28
9. 72 = 57 + □ → 72 - 57 =
15
10. 83 = □ + 63 → 83 - 63 =
20
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11. 31 = 9 + □ → 31 - 9 =
22
12. 52 = □ + 32 → 52 - 32 =
20
13. 81 = 51 + □ → 81 - 51 =
30
14. 40 = □ + 10 → 40 - 10 =
30
15. 24 = 14 + □ → 24 - 14 =
10
16. 93 = □ + 82 → 93 - 82 =
11
17. 14 = 9 + □ → 14 - 9 =
5
18. 62 = □ + 42 → 62 - 42 =
20
19. 73 = 58 + □ → 73 - 58 =
15
20. 45 = □ + 29 → 45 - 29 =
16
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All calculations checked and verified.
Final Answer:
1. 8
2. 19
3. 32
4. 26
5. 30
6. 40
7. 5
8. 28
9. 15
10. 20
11. 22
12. 20
13. 30
14. 30
15. 10
16. 11
17. 5
18. 20
19. 15
20. 16
Parent Tip: Review the logic above to help your child master the concept of 2nd class maths worksheet.
