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BT 4 ÔN PHÉP NHÂN, CHIA

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  • 18 000 : 6
    3 000
  • 45 : ? = 9
    5
  • 8 x ? = 240
    30
  • 5 000 x 3
    15 000
  • ? : 6 = 20
    120
  • ? x 9 = 540
    60
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