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

Toán Lớp 5: Chuyển các hỗn số sau thành phân số rồi tính: a, 2 2/3+3 3/4= b, 2 3/5×7 5/6= c, 1 3/5-2/3+1/3= d, 4 5/6:3/4×2 4/5= e,

Toán Lớp 5: Chuyển các hỗn số sau thành phân số rồi tính:
a, 2 2/3+3 3/4=
b, 2 3/5×7 5/6=
c, 1 3/5-2/3+1/3=
d, 4 5/6:3/4×2 4/5=
e, 3 19/35:5 7/9=
g, 1 3/4+2 2/8=
h, 9 1/8:2 7/9=

Comments ( 2 )

  1. a, 2 2/3+3 3/4= 8/3+ 15/4= 77/12
    b, 2 3/5×7 5/6= 13/5 x 47/6= 611/30
    c, 1 3/5-2/3+1/3= 8/5-2/3+1/3= 3/5-(2/3-1/3)=3/5-1/3=4/15
    d, 4 5/6:3/4×2 4/5=29/6:3/4×14/5= 812/45
    e, 3 19/35:5 7/9=124/35:52/9=279/455
    g, 1 3/4+2 2/8=7/4+9/4=16/4=4
    h, 9 1/8:2 7/9=73/8:25/9=657/200

  2.  
    Đáp  án +Lời giải và giải thích chi tiết:
    a, 2 2/3+3 3/4= 8/3+ 15/4= 77/12
    b, 2 3/5 . 7 5/6= 13/5 . 47/6= 611/30
    c, 1 3/5-2/3+1/3= 8/5-2/3+1/3= 3/5-(2/3-1/3)=3/5-1/3=4/15
    d, 4 5/6:3/4×2 4/5=29/6:3/4 . 14/5= 812/45
    e, 3 19/35:5 7/9=124/35:52/9=279/455
    g, 1 3/4+2 2/8=7/4+9/4=4
    h, 9 1/8:2 7/9=73/8:25/9=657/200

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

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