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

Toán Lớp 6: tính hợp lí : 27.16+81.21+9.21.3 = ? help nha

Toán Lớp 6: tính hợp lí :
27.16+81.21+9.21.3 = ?
help nha

Comments ( 2 )

  1. @Bao
    27.16+81.21+9.21.3
    =27.16+81.21+27.21
    =27.16+3.27.21+27.21
    =27.16+27.63+27.21
    =27.(16+63+21)
    =27.100
    =2700
     

  2. 27.16+81.21+9.21.3
    =27.16+27.3.21+27.21
    =27.16+27.63+27.21
    =27.(16+63+21)
    =27.100
    =2700
     

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