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

Toán Lớp 6: tính hợp lí : (252+2.28-5.28):28 = ? help me

Toán Lớp 6: tính hợp lí :
(252+2.28-5.28):28 = ?
help me

Comments ( 2 )

  1. $\text{#Chớp#}$
    $\text{( 252 + 2. 28 – 5 . 28) : 28}$
    $\text{ = ( 28 . 9 + 2. 28 – 5 . 28 ) : 28}$
    $\text{= 28 . ( 9 + 2 – 5 ) : 28}$
    $\text{= 28. 6 : 28}$
    $\text{= 168 : 28}$
    $\text{= 6}$

  2. (252+2.28-5.28):28 
    =(28.9+2.28-5.28):28
    =28.(9+2-5):28
    =6
      vậy đáp án câu trên =6

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