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

Toán Lớp 6: 128 nhân 46+128 nhaan32+128 nhân22

Toán Lớp 6: 128 nhân 46+128 nhaan32+128 nhân22

Comments ( 2 )

  1. 128 × 46 + 128 × 32 + 128 × 22
    = 128 × ( 46 + 32 + 22 )
    = 128 × 100
    = 12 800
     

  2. 128 xx 46 + 128 xx 32 + 128 xx 22
    Áp dụng tính chất : a xx b + a xx c + a xx d = a xx ( b + c + d), ta có :
    = 128 xx ( 46 + 32 + 22)
    = 128 xx 100
    = 12800
     

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

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