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

Toán Lớp 3: 9+9*9+9= bao nhiêu =-.

Toán Lớp 3: 9+9*9+9= bao nhiêu ……………..

Comments ( 2 )

  1. 9+9xx9+9
    =1xx9+9xx9+9xx1
    =9xx(1+9+1)
    =9xx11
    =99
     

  2. $\text{ Cách 1 : }$
    9 + 9 × 9 + 9
    = 9 + 81 + 9
    = 90 + 9
    = 99
    $\text{ Cách 2 : }$
    9 + 9 × 9 + 9
    = 9 × ( 1 + 9 + 1 )
    = 9 × 11
    = 99

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

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