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

Toán Lớp 4: A = 2012 × 134 – 2012 × 33 – 2012

Toán Lớp 4: A = 2012 × 134 – 2012 × 33 – 2012

Comments ( 2 )

  1. Giải đáp:
    A = 2012 × 134 – 2012 × 33 – 2012
    A = 2012 × 134 – 2012 × 33 – 2012xx1
    A= 2012 xx (134 – 33 – 1)
    A= 2012 xx 100
    A= 201200

  2. A = 2012 xx 134 – 2012 xx 33 – 2012 xx 1
       = 2012 xx (134 – 33 – 1)
       = 2012 xx 100
       = 201200
    ______________________
    Áp dụng tính chất: a xx b + a xx c + a xx d = a xx (b + c + d)
     

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