Grade 2 Addition Worksheets | Free Printables | Math Worksheets - Free Printable

I'll solve each addition problem step by step, checking my calculations carefully.

Working through the problems:

1. 22 + 18 = 40 (20 + 10 = 30, then 2 + 8 = 10, so 30 + 10 = 40)
2. 40 + 10 = 50
3. 15 + 44 = 59 (10 + 40 = 50, then 5 + 4 = 9, so 50 + 9 = 59)
4. 41 + 19 = 60 (40 + 10 = 50, then 1 + 9 = 10, so 50 + 10 = 60)
5. 11 + 10 = 21
6. 20 + 16 = 36
7. 32 + 18 = 50 (30 + 10 = 40, then 2 + 8 = 10, so 40 + 10 = 50)
8. 38 + 22 = 60 (30 + 20 = 50, then 8 + 2 = 10, so 50 + 10 = 60)
9. 36 + 44 = 80 (30 + 40 = 70, then 6 + 4 = 10, so 70 + 10 = 80)
10. 21 + 39 = 60 (20 + 30 = 50, then 1 + 9 = 10, so 50 + 10 = 60)
11. 41 + 29 = 70 (40 + 20 = 60, then 1 + 9 = 10, so 60 + 10 = 70)
12. 23 + 37 = 60 (20 + 30 = 50, then 3 + 7 = 10, so 50 + 10 = 60)
13. 15 + 35 = 50 (10 + 30 = 40, then 5 + 5 = 10, so 40 + 10 = 50)
14. 28 + 52 = 80 (20 + 50 = 70, then 8 + 2 = 10, so 70 + 10 = 80)
15. 15 + 20 = 35
16. 49 + 11 = 60 (40 + 10 = 50, then 9 + 1 = 10, so 50 + 10 = 60)
17. 24 + 16 = 40 (20 + 10 = 30, then 4 + 6 = 10, so 30 + 10 = 40)
18. 13 + 27 = 40 (10 + 20 = 30, then 3 + 7 = 10, so 30 + 10 = 40)
19. 28 + 32 = 60 (20 + 30 = 50, then 8 + 2 = 10, so 50 + 10 = 60)
20. 32 + 22 = 54 (30 + 20 = 50, then 2 + 2 = 4, so 50 + 4 = 54)

Let me double-check a few of these to make sure:
- #1: 22 + 18 → 22 + 8 = 30, 30 + 10 = 40 ✓
- #9: 36 + 44 → 36 + 4 = 40, 40 + 40 = 80 ✓
- #14: 28 + 52 → 28 + 2 = 30, 30 + 50 = 80 ✓
- #20: 32 + 22 → 32 + 20 = 52, 52 + 2 = 54 ✓

All calculations verified!

Final Answer:
1. 40
2. 50
3. 59
4. 60
5. 21
6. 36
7. 50
8. 60
9. 80
10. 60
11. 70
12. 60
13. 50
14. 80
15. 35
16. 60
17. 40
18. 40
19. 60
20. 54