heatherof4 heatherof4
  • 17-11-2016
  • Mathematics
contestada

show 2 ways to use a doubles fact to find 6+7

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J4mesTDG
J4mesTDG J4mesTDG
  • 17-11-2016
6 + 7 = 13 - 7 = 6 or 13 - 6 = 7
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