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

Toán Lớp 5: 17,36 + 85,5 + 82,64 + 14,5 24,5 x 7,1 + 24,5 x 1,9 + 24,5

Toán Lớp 5: 17,36 + 85,5 + 82,64 + 14,5
24,5 x 7,1 + 24,5 x 1,9 + 24,5

Comments ( 2 )

  1. 17,36 + 85,5 + 82,64 + 14,5
    =(17,36+82,64) +(85,5+14,5)
    =100+100
    =200
    24,5 x 7,1 + 24,5 x 1,9 + 24,5
    =24,5 x 7,1 + 24,5 x 1,9 + 24,5×1
    =24,5 x( 7,1+1,9+1)
    =24,5×10
    =245
     

  2. 17,36 + 85,5 + 82,64 + 14,5
    =(85,5+14,5)+(17,36+82,64)
    =100+100
    =200
    __________________________________________________________________________________________________________
    24,5 x 7,1 + 24,5 x 1,9 + 24,5
    =24,5 x 7,1 + 24,5 x 1,9 + 24,
    =24,5x(7,1+1,9+1)
    =24,5×10
    =245
     

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