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

Toán Lớp 5: a) 7/5 + 4/7 – 9/10 = b)2 +3/4 x 8/5 = c)9/8 – 6/5 :8/5 = d) 6 :9/7 x 3/10 =

Home/ Toán Lớp 5: a) 7/5 + 4/7 – 9/10 = b)2 +3/4 x 8/5 = c)9/8 – 6/5 :8/5 = d) 6 :9/7 x 3/10 =

Toán Lớp 5: a) 7/5 + 4/7 – 9/10 = b)2 +3/4 x 8/5 = c)9/8 – 6/5 :8/5 = d) 6 :9/7 x 3/10 =

Tháng Sáu 20, 2022 Toán học 2 Comments 0 views

Toán Lớp 5: a) 7/5 + 4/7 – 9/10 = b)2 +3/4 x 8/5 = c)9/8 – 6/5 :8/5 = d) 6 :9/7 x 3/10 =

Comments ( 2 )

  1. dantam45
    dantam45
    20 Tháng Sáu, 2022 at 1:14 sáng
    Reply
    Bạn xem ảnh bên dưới để biết đáp án nha
     

    toan-lop-5-a-7-5-4-7-9-10-b-2-3-4-8-5-c-9-8-6-5-8-5-d-6-9-7-3-10

  2. annhocbichchaubich
    annhocbichchaubich
    20 Tháng Sáu, 2022 at 1:13 sáng
    Reply
    a,$\frac{7}{5}$ + $\frac{4}{7}$ – $\frac{9}{10}$
    = $\frac{98}{70}$+$\frac{40}{70}$-$\frac{63}{70}$ 
    = $\frac{98+40-63}{70}$
    =$\frac{75}{70}$
    =$\frac{15}{14}$
    b, 2 + $\frac{3}{4}$ x $\frac{8}{5}$
    = 2+ $\frac{3×8}{4×5}$
    = 2 + $\frac{24}{20}$
    = 2 + $\frac{6}{5}$
    = $\frac{10}{5}$ + $\frac{6}{5}$
    = $\frac{10+6}{5}$
    =$\frac{16}{5}$
    c, $\frac{9}{8}$-$\frac{6}{5}$:$\frac{8}{5}$
    =$\frac{9}{8}$-$\frac{6}{5}$x$\frac{5}{8}$
    =$\frac{9}{8}$-$\frac{6×5}{5×8}$
    =$\frac{9}{8}$-$\frac{3}{4}$
    =$\frac{9}{8}$-$\frac{6}{8}$
    =$\frac{9-6}{8}$
    =$\frac{3}{8}$
    d,6:$\frac{9}{7}$x$\frac{3}{10}$
    =6x$\frac{7}{9}$x$\frac{3}{10}$
    = $\frac{6x7x3}{9×10}$
    =$\frac{126}{90}$
    =$\frac{7}{5}$

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

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