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Add double within 20

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    Add double within 20
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  • 7 + 7 = 14. What is 7 + 8?
    15
  •  15
  • 6 + 6 = 12. What is 6 + 7?
    13
  •  15
  • 8 + 8 = 16. What is 8 + 7?
    15
  •  15
  • 5 + 5 = 10. What is 5 + 6?
    11
  •  15
  • 9 + 9 = 18. What is 9 + 8?
    17
  •  15
  • 4 + 4 = 8. What is 4 + 5?
    9
  •  15
  • 3 + 3 = 6. What is 3 + 4?
    7
  •  15
  • 2 + 2 = 4. What is 2 + 3?
    5
  •  15
  • 10 + 10 = 20. What is 10 + 9?
    19
  •  15
  • What is 8 + 8
    16
  •  15
  • What is 7+ 7
    14
  •  15
  • What is 9 + 9
    18
  •  15
  • What is 6 + 6
    12
  •  15
  • What is 10 + 10
    20
  •  15
  • What is 20 + 20
    40
  •  15
  • What is 30 + 30
    60
  •  15