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Addition within 20
Add up two numbers on the slides.
Have a good try.
11 6
Let’s check your answer. 11 + 6 =  17
10 9
Let’s check your answer. 10 + 9 =  19
15 3
Let’s check your answer. 15 + 3 =  18
4 15
Let’s check your answer. 4 + 15 =  19
7 8
Let’s check your answer. 7 + 8 =  15
11 9
Let’s check your answer. 11 + 9 =  20
7 9
Let’s check your answer. 7 + 9 =  16
11 5
Let’s check your answer. 5 + 11 =  16
4 16
Let’s check your answer. 4 + 16 =  20
8 8
Let’s check your answer. 8 + 8 =  16
Good  job!
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Step2

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Transcript of "Step2"

  1. 1. Addition within 20
  2. 2. Add up two numbers on the slides.
  3. 3. Have a good try.
  4. 4. 11 6
  5. 5. Let’s check your answer. 11 + 6 = 17
  6. 6. 10 9
  7. 7. Let’s check your answer. 10 + 9 = 19
  8. 8. 15 3
  9. 9. Let’s check your answer. 15 + 3 = 18
  10. 10. 4 15
  11. 11. Let’s check your answer. 4 + 15 = 19
  12. 12. 7 8
  13. 13. Let’s check your answer. 7 + 8 = 15
  14. 14. 11 9
  15. 15. Let’s check your answer. 11 + 9 = 20
  16. 16. 7 9
  17. 17. Let’s check your answer. 7 + 9 = 16
  18. 18. 11 5
  19. 19. Let’s check your answer. 5 + 11 = 16
  20. 20. 4 16
  21. 21. Let’s check your answer. 4 + 16 = 20
  22. 22. 8 8
  23. 23. Let’s check your answer. 8 + 8 = 16
  24. 24. Good job!
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