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

Toán Lớp 5: Tính Nhanh Phân Số : g 2000 x 2001 – 1000/ 2000 x 2000 + 1000

Toán Lớp 5: Tính Nhanh Phân Số :
g 2000 x 2001 – 1000/ 2000 x 2000 + 1000

Comments ( 2 )

  1. (2000 xx 2001 – 1000)/ (2000 xx 2000 + 1000)
      ta có:
     2000 xx 2001 – 1000
    = 2000 xx ( 2000 + 1) – 1000
    = 2000 xx 2000 + 2000 – 1000
    = 2000 xx 2000 – 1000
    =>(2000 xx 2000 – 1000)/(2000 xx 2000 + 1000)
    = (2000 xx 2000 – 1000)/ (2000 xx 2000 + 1000)
    = 1

  2. = 2000 x 2001 – 2000 x 2000 – 1000/1000
    = 1 x 2000 – 1000/1000
    = 2000 – 1000/1000
    = 1000/1000 = 1
    Xin hay nhất và 5 sao ạ

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

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