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TOÁN TIẾT 3 (TUẦN 1)

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  • 20 -10 -5 =
    5
  • 10 : 2 =
    5
  • 95 - 5 =
    90
  • 15 + 5 + 10 =
    30
  • 2 X 5 =
    10
  • 30 + 10 =
    40
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