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

Toán Lớp 5: Rút gọn p/s `2/6` `9/3` `72/9`

Toán Lớp 5: Rút gọn p/s
2/6 9/3 72/9

Comments ( 2 )

  1. 2/6=(2:2)/(6:2)=1/3
    9/3=(9:3)/(3:3)=3
    72/9=(72:9)/(9:9)=8

  2. 2/6 = (2 : 2)/(6 : 2) = 1/3
    9/3 = (9 : 3)/(3 : 3) = 3/1 = 3
    72/9 = (72 : 9)/(9 : 9) = 8/1 = 8
     

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

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