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  • 5 - 3 = 1
    5 - 3 = 2 or 5 - 4 = 1 or 4 - 3 = 1
  • 2, 4, 6, 7, 10
    8 not 7 (2, 4, 6, 8, 10)
  • 2 + 2 = 3
    2 + 1 = 3 or 2 + 2 = 4 or 1 + 2 = 3
  • 100 + 100 = 300
    100 +100 = 200 or 100 + 200 = 300 or 200 + 100 = 300
  • 4 + 7 = 10
    4 + 7 = 11 or 4 + 6 = 10 or 3 + 7 = 10
  • 21, 31, 41, 51, 71
    61 not 71 (counting by 10's)
  • 12 - 6 = 5
    12 - 6 = 6 or 12 - 7 = 5 or 11 - 6 = 5
  • 3 + 3 = 7
    3 + 3= 6 or 3 + 4= 7
  • 7 + 2 = 10
    7 + 2 = 9 or 7 + 3 = 10 or 8 + 2 =10
  • 10 - 5 = 4
    10 - 5 = 5 or 10 - 6 = 4 or 9 - 5 = 4
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