I.Supply the missing numbers.
1. + 8 = 17 11. 5 + ( 9 + ) = 18
2. + 5 = 12 12. 3 + ( 6 + ) = 19
3. + 6 = 13 13. 4 + ( 9 + ) = 13
4. + 9 = 16 14. 7 + ( 0 + ) = 16
5. + 7 = 15 15. 2 + ( + 9 ) = 15
6. 5 + = 19 16. 6 + ( + 5 ) = 18
7. 8 + = 17 17. 9 + ( + 4 ) = 20
8. 6 + = 18 18. 8 + ( + 7 ) = 19
9. 9 + = 14 19. 7 + ( 5 + 8 ) =
10. 7 + = 16 20. 3 + ( 8 + 5 ) =
II.Write three addition sentences for the following sums.
1. 15
2. 18
3. 16
4. 19
5. 20
III.Add the following..
1. 2 6 2. 5 4 3. 7 2 4. 3 7 5. 4 5
+ 3 2 + 2 3 + 2 5 + 6 0 + 3 4
________ ________ _________ ________ _______
6. 1 8 2 7. 2 4 1 8. 7 3 0 9. 5 3 4 10. 3 7 6
+ 2 1 7 + 5 3 8 + 2 5 4 + 2 1 5 + 6 1 2
_______ _________ _________ _________ _______
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