Number bonds to 20

Year 1 and Year 2 · Addition and subtraction

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Questions

Write the missing number to make 20.

1. 1
   3 + □ = 20
2. 2
   □ + 11 = 20
3. 3
   20 − 19 = □
4. 4
   □ + 6 = 20
5. 5
   14 + □ = 20
6. 6
   20 − 1 = □
7. 7
   9 + □ = 20
8. 8
   □ + 17 = 20
9. 9
   20 − 4 = □
10. 10
    □ + 12 = 20
11. 11
    20 + □ = 20
12. 12
    20 − 7 = □
13. 13
    15 + □ = 20
14. 14
    □ + 2 = 20
15. 15
    20 − 10 = □
16. 16
    □ + 18 = 20
17. 17
    5 + □ = 20
18. 18
    20 − 13 = □
19. 19
    0 + □ = 20
20. 20
    □ + 8 = 20
21. 21
    20 − 16 = □
22. 22
    □ + 3 = 20
23. 23
    11 + □ = 20
24. 24
    20 − 19 = □