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

Toán Lớp 7: Thực hiệp phép tính sau: a) $3^{3}$ . 2-3. $4^{2}$ d) $\sqrt[]{\frac{64}{81}}$-$|\frac{-2020}{2021}|$+$(\frac{-1}{3})^2$

Home/ Toán Lớp 7: Thực hiệp phép tính sau: a) $3^{3}$ . 2-3. $4^{2}$ d) $\sqrt[]{\frac{64}{81}}$-$|\frac{-2020}{2021}|$+$(\frac{-1}{3})^2$

Toán Lớp 7: Thực hiệp phép tính sau: a) $3^{3}$ . 2-3. $4^{2}$ d) $\sqrt[]{\frac{64}{81}}$-$|\frac{-2020}{2021}|$+$(\frac{-1}{3})^2$

Tháng Tám 7, 2022 Toán học 2 Comments 0 views

Toán Lớp 7: Thực hiệp phép tính sau:
a) $3^{3}$ . 2-3. $4^{2}$
d) $\sqrt[]{\frac{64}{81}}$-$|\frac{-2020}{2021}|$+$(\frac{-1}{3})^2$

Comments ( 2 )

  1. cobebongdem
    cobebongdem
    7 Tháng Tám, 2022 at 3:32 chiều
    Reply
    a)3^3.2 -3. 4^2
    =27.2-3.8
    =54-48
    =6
    d)sqrt{64/81}- |-2020/2021|+((-1)/3)^2
    =8/9- 2020/2021+ 1/9
    =(8/9+1/9)-2020/2021)
    =1-2020/2021
    =1/2021

  2. truongthanhhung
    truongthanhhung
    7 Tháng Tám, 2022 at 3:31 chiều
    Reply
    $a) 3³.2-3.4²$
    =$3³.2.3.2⁴$
    =$3.2.(3².2⁴)$
    =$6.(9-8)$
    =$6.1$
    =$6$
    $b)$ $\sqrt[]{\frac{64}{81}}$-$|\frac{-2020}{2021}|$+$(\frac{-1}{3})^2$
    =$\frac{8}{9}$-$\frac{2020}{2021}$+$\frac{1}{9}$
    =($\frac{8}{9}$+$\frac{1}{9}$)-$\frac{2020}{2021}$
    =$\frac{9}{9}$-$\frac{2020}{2021}$ 
    =$1$-$\frac{2020}{2021}$ 
    =$\frac{1}{2021}$ 

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

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