Violympic toán 6
Các câu hỏi tương tự
1 tháng 2 2021 lúc 16:23
Tính giá trị biểu thức : A= \(\dfrac{5\left(2^2.3^2\right)^9.\left(2^2\right)^6-2\left(2^2.3\right)^{14}.3^4}{5.2^{28}.3^{18}-7.2^{29}.3^{18}}\)
RÚT GỌN
a,dfrac{121.75.130.169}{39.60.11.198}
b,dfrac{left(3.4.2^{16}right)^2}{11.2^{13}.4^{11}.16^9}
c,dfrac{5.left(2^2.3^2right)^9.left(2^2right)^6-2.left(2^2.3right)^{14}.3^6}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}
TÍNH HỢP LÍ
a,left(10^2+11^2+12^2right):left(13^2+14^2right)
TÍNH NHANH
a,13-12+11+10-9+8-7-6+-4+3+2-1
Đọc tiếp
RÚT GỌN
\(a,\dfrac{121.75.130.169}{39.60.11.198}\)
\(b,\dfrac{\left(3.4.2^{16}\right)^2}{11.2^{13}.4^{11}.16^9}\)
\(c,\dfrac{5.\left(2^2.3^2\right)^9.\left(2^2\right)^6-2.\left(2^2.3\right)^{14}.3^6}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}\)
TÍNH HỢP LÍ
\(a,\left(10^2+11^2+12^2\right):\left(13^2+14^2\right)\)
TÍNH NHANH
\(a,13-12+11+10-9+8-7-6+-4+3+2-1\)
12 tháng 7 2020 lúc 20:46
Tính \(A=\frac{5.6^{18}.\left(2^2\right)^6-2.\left(2^2.3\right)^{14}.3^4}{5.4^{14}.3^{18}-7.2^{29}.9^9}\)
tính a, \(\dfrac{5.4^{15}.9^9-4.30^{20}8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
b, 1\(\dfrac{1}{30}\):\(\left(24\dfrac{1}{6}-24\dfrac{1}{5}\right)-\dfrac{1\dfrac{1}{2}-\dfrac{3}{4}}{4x-\dfrac{1}{2}}=\left(-1\dfrac{1}{15}\right):\left(8\dfrac{1}{5}-8\dfrac{1}{3}\right)\)
Thực hiện phép tính:
A=5.(2^2.3^2)^9.(2^2)^6-2.(2^2.3)^14.3^14/5.2^28.3^18-7.2^29.3^18
Thực hiện phép tính: A= 5.(2^2.3^2)^9.(2^2)^6-2.(2^2.3)^14.3^4/5.2^28.3^18-7.2^29.3^18
thực hiện các phép tính sau:
A =\(\frac{5.2^{30}.3^{18}-4.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
B = 1 - 3 + 5 - 7 + 9 - 11 + ..... + 2017 - 2019
C =\(\left(\frac{151515}{606060}+\frac{151515}{121212}+\frac{151515}{202020}+\frac{151515}{303030}+\frac{151515}{424242}\right).\frac{28}{15}\)
10 tháng 4 2021 lúc 22:28
Tìm x∈Z, biết:a) left(x-20right)+left(x-19right)+left(x-18right)+...+99+100100b) 213-x.left(dfrac{1}{2}+dfrac{1}{2^2}+dfrac{1}{2^3}+...+dfrac{1}{2^{2020}}right):left(1-dfrac{1}{2^{2020}}right)13
Đọc tiếp
\(Tìm\) \(x\)∈\(Z\)\(,\) \(biết\)\(:\)
\(a\)) \(\left(x-20\right)+\left(x-19\right)+\left(x-18\right)+...+99+100=100\)
\(b\)) \(213-x.\left(\dfrac{1}{2}+\dfrac{1}{2^2}+\dfrac{1}{2^3}+...+\dfrac{1}{2^{2020}}\right):\left(1-\dfrac{1}{2^{2020}}\right)=13\)
Thực hiện phép tính:
a) 4.52 -32:25
b)9.8.14+ 6.(-17)(-12)+19.(-4).18
c)\(\left(\dfrac{-1}{2}\right)\)3-2.\(\left(\dfrac{-1}{2}\right)^{2^{ }}+3.\left(\dfrac{-1}{2^{ }}\right)+1\)