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Addition and Subtraction by 10's within 120

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    Addition and Subtraction by 10's within 120
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  • 40+21
    61
  •  15
  • 82-30
    52
  •  15
  • 118-30
    88
  •  15
  • 104-60
    44
  •  15
  • 60+24
    84
  •  15
  • 20+99
    119
  •  15
  • 65-30
    35
  •  15
  • 78-40
    38
  •  15
  • 30+34
    64
  •  15