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

Toán Lớp 6: tính nhanh : (116+124)-(215-116-124) giúp mink với

Toán Lớp 6: tính nhanh : (116+124)-(215-116-124)
giúp mink với

Comments ( 2 )

  1. $\text{( 116 + 124 ) – ( 215 – 116 – 124 ) }$
    $\text{= 215 + ( 116 – 116 ) – ( 124 – 124 )}$
    $\text{= 215 + 0 – 0  }$
    $\text{= 215 – 0 }$
    $\text{= 215 }$

  2. \text{#vanyenvy2009}
    \text{( 116 + 124 ) – ( 215 – 116 – 124 )}
    \text{= 215 + ( 116 – 116 ) – ( 124 – 124 )}
    \text{= 215 + 0 – 0}
    \text{= 215.}
     

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