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

Toán Lớp 4: Bài 1 : Tính A/ 5/2 x 1/3 + 1/4 B/. 7/4 : 3

Toán Lớp 4: Bài 1 : Tính
A/ 5/2 x 1/3 + 1/4
B/. 7/4 : 3

Comments ( 2 )

  1. A/  $\frac{5}{2}$ x $\frac{1}{3}$  + $\frac{1}{4}$ 
     = $\frac{5}{6}$ + $\frac{1}{4}$ 
     = $\frac{10}{12}$ + $\frac{3}{12}$ 
     = $\frac{13}{12}$ 
    B/ $\frac{7}{4}$  : 3
     =$\frac{7}{4}$  x $\frac{1}{3}$ 
      = $\frac{7}{12}$

  2. Bài 1 :
    a , 5/2 × 1/3 + 1/4 
    = 5/5 + 1/4
    = 10/12 + 3/12
    = 13/12
    b , 7/4 ÷ 3
    = 7/4 ÷ 1/3
    = 7/12
    #=)

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