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

Toán Lớp 5: Tính : 7/5 + 3/8 7/5 – 3/8 7/5 x 3 7/5 : 3 3: 7/5

Toán Lớp 5: Tính :
7/5 + 3/8
7/5 – 3/8
7/5 x 3
7/5 : 3
3: 7/5

Comments ( 2 )

  1. 7/5 + 3/8 = 56/40 + 15/40 = 56 + 15/40 =  71/40
    7/5 – 3/8 = 56/40 – 15/40 = 56 – 15/ 40 =  41/40
    7/5 xx 3 = 7/5 xx 3/1 = 7 xx 3/5 xx 1 =  21/5
    7/5 : 3 = 7/5 : 3/1 = 7/5 xx 1/3 = 7 xx 1/5 xx 3 = 7/15
    3 : 7/5 = 3/1 : 7/5 = 3/1 xx 5/7 = 3 xx 5/1 xx 7 = 15/7

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