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

Toán Lớp 6: a) 12÷{400÷[500-(125+25×7)]} = b) 5×5^2-18÷3=

Toán Lớp 6: a) 12÷{400÷[500-(125+25×7)]} = b) 5×5^2-18÷3=

Comments ( 2 )

  1. a) 12÷{400÷[500-(125+25×7)]}
    = 12÷{400÷[500-(125+175)]}
    = 12÷[400÷(500-300)]
    = 12÷(400÷200)
    = 12÷2
    = 6
    b) 5×5^2-18÷3
    = 5×25-6
    = 125-6
    = 119
    $#Bin$

  2. Giải đáp:
    a) 6
    b) 119
    Lời giải và giải thích chi tiết:
    a)
    12 : { 400 : [500 – (125 + 25 xx 7)] }
    = 12 : { 400 : [500 – (125 + 175)] }
    = 12 : { 400 : [500 – 300] }
    = 12 : { 400 : 200 }
    = 12 : 2
    = 6
    b)
    5 xx 5^2 – 18 : 3
    = 5 xx 25 – 6
    = 125 – 6
    = 119
    #SunHee

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

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