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

Toán Lớp 5: Bài 1 : a, 2018 – 4 x ( 35 – 44 + 19 ) : 10 b, 96 – 24 x 3 + 125 : 5 c, 125 x ( 34 + 12 ) + 125 x 34 d, 341 x 80 + 341 x 29 + 659 x 1

Toán Lớp 5: Bài 1 :
a, 2018 – 4 x ( 35 – 44 + 19 ) : 10
b, 96 – 24 x 3 + 125 : 5
c, 125 x ( 34 + 12 ) + 125 x 34
d, 341 x 80 + 341 x 29 + 659 x 109
e, 25 x 1212 – 12 x 2525

Comments ( 2 )

  1. a)
    $= 2018 – 4 x 10 : 10$
    $= 2018 -4 x 1$
    $= 2018-4$
    $= 2014$
    b)
    $= 96-72 + 25$
    $= 49$
    c)
    $= 125 x 46 + 4250$
    $= 5750 + 4250$
    $=10000$
    d)
    $= 27280 + 9889 + 71831$
    $= 109000$
    e)
    $= 30300 – 30300$
    $=0$

  2. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    a, 2018 – 4 xx ( 35 – 44 + 19 ) : 10
    = 2018 – 4 xx ( 54 – 44 ) : 10
    = 2018 – 4 xx 10 : 10
    = 2018 – 4 = 2014
    b, 96 – 24 xx 3 + 125 : 5
    = 96 – 72 + 25
    = 24 + 25 = 49
    c, 125 xx ( 34 + 12 ) + 125 xx 34
    = 125 xx 34 + 125 xx 12 + 125 xx 34
    = 125 xx ( 34 + 12 + 34 )
    = 125 xx 80 = 10 000
    d, 341 xx 80 + 341 xx 29 + 659 xx 109
    = 341 xx ( 80 + 29 ) + 659 xx 109
    = 341 xx 109 + 659 xx 109
    = 109 xx ( 341 + 659 )
    = 109 xx 1000 = 109000
    e, 25 xx 1212 – 12 xx 2525
    = 25 xx 101 xx 12 – 12 xx 2525
    = 2525 xx 12 – 12 xx 2525
    = 12 xx ( 2525 – 2525 )
    = 12 xx 0 = 0

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