Let’s solve each subtraction problem step by step. I’ll go through them one at a time and double-check my math.
1. 22 - 1 = 21
2. 20 - 10 = 10
3. 15 - 5 = 10
4. 22 - 2 = 20
5. 31 - 9 → Think: 31 - 10 = 21, then add back 1 → 22
6. 16 - 6 = 10
7. 11 - 4 = 7
8. 24 - 1 = 23
9. 10 - 3 = 7
10. 12 - 9 = 3
Now the second column:
11. 16 - 3 = 13
12. 18 - 8 = 10
13. 20 - 2 = 18
14. 14 - 7 = 7
15. 22 - 10 = 12
16. 19 - 9 = 10
17. 16 - 6 = 10
18. 17 - 2 = 15
19. 20 - 1 = 19
20. 19 - 5 = 14
I’ve checked each calculation again — all look correct.
Final Answer:
1. 21
2. 10
3. 10
4. 20
5. 22
6. 10
7. 7
8. 23
9. 7
10. 3
11. 13
12. 10
13. 18
14. 7
15. 12
16. 10
17. 10
18. 15
19. 19
20. 14
Parent Tip: Review the logic above to help your child master the concept of addition subtraction worksheet for grade 1.
