1. Addition within 20

2. Add up two numbers on the slides.

3. Have a good try.

4. 11 6

5. Let’s check your answer. 11 + 6 = 17

6. 10 9

7. Let’s check your answer. 10 + 9 = 19

8. 15 3

9. Let’s check your answer. 15 + 3 = 18

10. 4 15

11. Let’s check your answer. 4 + 15 = 19

12. 7 8

13. Let’s check your answer. 7 + 8 = 15

14. 11 9

15. Let’s check your answer. 11 + 9 = 20

16. 7 9

17. Let’s check your answer. 7 + 9 = 16

18. 11 5

19. Let’s check your answer. 5 + 11 = 16

20. 4 16

21. Let’s check your answer. 4 + 16 = 20

22. 8 8

23. Let’s check your answer. 8 + 8 = 16

24. Good job!