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

Toán Lớp 4: Cho mik hỏi bài 5:Tìm bằng cách thuận tiện nhất a) 357 : 5 + 125 : 5= b) 624 : 3 – 324 : 3 =

Toán Lớp 4: Cho mik hỏi bài 5:Tìm bằng cách thuận tiện nhất
a) 357 : 5 + 125 : 5=
b) 624 : 3 – 324 : 3 =

Comments ( 2 )

  1. a) 357 : 5 + 125 : 5
    = (357 + 125) : 5
    = 482 : 5
    = 96.4
    b) 624 : 3 – 324 : 3
    = (624 – 324) : 3
    = 300 : 3
    = 100

  2. $\#Lynn2007$
    a)357:5+125:5
    =357 . 1/5+125 . 1/5
    =1/5.(357+125)
    =1/5.482
    =482/5.
    b)624:3-324:3
    =624.1/3-324.1/3
    =1/3.(624-324)
    =1/3.300
    =100.

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