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

Toán Lớp 6: Tính nhanh : ( 124 – 432 + 156 ) -(156 – 432 + 224)

Toán Lớp 6: Tính nhanh : ( 124 – 432 + 156 ) -(156 – 432 + 224)

Comments ( 2 )

  1. (124-432+156)-(156-432+224)
    =124-432+156-156+432-224
    =(156-156)+(432-432)+(124-224)
    =-100

  2. (124 – 432 + 156) – (156 – 432 + 224)
    = 124 – 432 + 156 – 156 + 432 – 224.
    = (124 – 224) + (432 – 432) + (156 – 156)
    = -100 – 0 + 0
    = -100
     

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

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