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

Toán Lớp 5: 2/7 + 27/48 + 7 / 16 + 45 / 63 . Tính bằng cách nhanh nhất

Toán Lớp 5: 2/7 + 27/48 + 7 / 16 + 45 / 63 . Tính bằng cách nhanh nhất

Comments ( 2 )

  1. 2/7+27/48+7/16+45/63
    =2/7+9/16+7/16+5/7
    =(2/7+5/7)+(9/16+7/16)
    =7/7+16/16
    =1+1
    =2

  2. 2/7+27/48+7/16+45/63
    =2/7+9/16+7/16+5/7
    =(2/7+5/7)+(9/16+7/16)
    =1+1
    =2
     

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