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

Toán Lớp 7: 1.Tính a.$\frac{2}{3}$+$\frac{-1}{3}$+$\frac{7}{15}$ b.4:5$\frac{3}{4}$ c.$\frac{13}{7}$:5$\frac{3}{14}$ d.$\frac{11}{2}$.4$\frac{5}{

Home/ Toán Lớp 7: 1.Tính a.$\frac{2}{3}$+$\frac{-1}{3}$+$\frac{7}{15}$ b.4:5$\frac{3}{4}$ c.$\frac{13}{7}$:5$\frac{3}{14}$ d.$\frac{11}{2}$.4$\frac{5}{

Toán Lớp 7: 1.Tính a.$\frac{2}{3}$+$\frac{-1}{3}$+$\frac{7}{15}$ b.4:5$\frac{3}{4}$ c.$\frac{13}{7}$:5$\frac{3}{14}$ d.$\frac{11}{2}$.4$\frac{5}{

Tháng Mười 9, 2022 Toán học 2 Comments 0 views

Toán Lớp 7: 1.Tính
a.$\frac{2}{3}$+$\frac{-1}{3}$+$\frac{7}{15}$
b.4:5$\frac{3}{4}$
c.$\frac{13}{7}$:5$\frac{3}{14}$
d.$\frac{11}{2}$.4$\frac{5}{3}$-2$\frac{5}{3}$.$\frac{11}{2}$
……………………MONG CÁC BẠN GIÚP ĐỠ………………..
THANKS

Comments ( 2 )

  1. buianhtuan
    buianhtuan
    9 Tháng Mười, 2022 at 2:20 sáng
    Reply
    a) 2/3 + (-1)/3 + 7/15
    = 1/3 + 7/15
    = 5/15 + 7/15
    = 12/15
    = 4/5
    b) 4 : 5 3/4
    = 4 : 23/4
    = 4 . 4/23
    = 16/23
    c) 13/7 : 5 3/14
    = 13/7 : 73/14
    = 13/7 . 14/73
    =26/73
    d) 11/2 . 4 5/3 – 2 5/3 . 11/2
    = 11/2 . ( 4 5/3 – 2 5/3)
    = 11/2 . 2
    = 11
    #caty09

  2. mocmien87
    mocmien87
    9 Tháng Mười, 2022 at 2:20 sáng
    Reply
    1. 
    a) 2/3+ -1/3 + 7/15
    = 10/15+ -5/15 + 7/15
    =  12/15 = 4/5
    b) 4 : 53/4
    = 4 : 23/4
    = 16/23
    c) 13/7 : 53/14
    = 13/7: 73/14
    = 26/73
    d) 11/2.45/3-25/3.11/2
    = 11/2 . 17/3-11/3.11/2
    = 11/2 . ( 17/3-11/3)
    = 11/2 . 2
    = 11

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

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