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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: 4 . 113 . 25 – 5 . 112 . 20 tính thuaann tiện

Toán Lớp 6: 4 . 113 . 25 – 5 . 112 . 20 tính thuaann tiện

Comments ( 2 )

  1. 4.113.25-5.112.20
    =(4.25).113-(5.20).112
    =100.113-100.112
    =100.(113-112)
    =100.1
    =100

  2. 4 . 113 . 25 – 5 . 112 . 20
    = ( 4 . 25) . 113 – ( 5 . 20) . 112
    = 100 . 113 – 100 . 112
    = 100 . ( 113 – 112)
    = 100 . 1
    = 100
    #caty09

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222-9+11+12:2*14+14 = ? ( )

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