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Doubles Facts (+1, -1, +10, -10)

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    Doubles facts
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  • Use a doubles fact to solve: 7+8=
    15
  •  15
  • Use a doubles fact to solve: 7+6=
    13
  •  15
  • Use a doubles fact to solve: 6+7=
    13
  •  15
  • Use a doubles fact to solve: 6+5=
    11
  •  15
  • Use a doubles fact to solve: 5+6=
    11
  •  15
  • Use a doubles fact to solve: 5+4=
    9
  •  15
  • Use a doubles fact to solve: 4+5=
    9
  •  15
  • Use a doubles fact to solve: 4+3=
    7
  •  15
  • Use a doubles fact to solve: 3+4=
    7
  •  15
  • Use a doubles fact to solve: 3+2=
    5
  •  15
  • Use a doubles fact to solve: 2+3=
    5
  •  15
  • 2+1=
    3
  •  15
  • 1+2=
    3
  •  15
  • 1+0=
    0
  •  15
  • Use a doubles fact to solve: 1+11=
    12
  •  15
  • Use a doubles fact to solve: 2+12=
    14
  •  15