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

Toán Lớp 5: Tính nhanh: 6,75 x 45 – 6,75 x 43 – 6,75

Toán Lớp 5: Tính nhanh: 6,75 x 45 – 6,75 x 43 – 6,75

Comments ( 2 )

  1. 6,75 x 45 – 6,75 x 43 – 6,75
    = 6,75 (45 – 43 – 1)
    = 6,75 x 1
    = 6,75
    #Ling
     

  2. Tính  nhanh:
    6,75 xx 45 –  6,75 xx 43 – 6,75
    =(6,75 – 6,75) – (6,75 x 43) – 45
    =0 – 290,25 xx 45
    =0

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

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