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

Toán Lớp 4: Tính bằng cách hợp lí 25 x 125 x 8 x 4

Toán Lớp 4: Tính bằng cách hợp lí
25 x 125 x 8 x 4

Comments ( 2 )

  1. 25 x 125 x 8 x4=(25 x 4) x (125 x 8)
                           =100 x 1000=100000

  2. 25 x 125 x 8 x 4
    = ( 25 × 4 ) × ( 125 × 8 )
    = 100 × 1000
    = 100000

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

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