Ôn tập toán 7
Các câu hỏi tương tự
Tính: \(\dfrac{5^4.20^4}{25^5.4^5}\)
a) \(\left(1,25\right)^3.8^3\)
b) \(\left(\dfrac{-11}{9}\right)^4.\left(\dfrac{27}{22}\right)^4\)
c) \(\left(\dfrac{3}{7}+\dfrac{1}{2}\right)^2\)
d) \(\dfrac{5^4.20^4}{25^5.4^5}\)
Tính
a) (\(\dfrac{3}{7}\)+\(\dfrac{1}{2}\))2 b) (\(\dfrac{3}{4}\)-\(\dfrac{5}{6}\))2 c) \(\dfrac{5^4.20^4}{25^5.4^5}\) d) (\(\dfrac{-10}{3}\))5.(\(\dfrac{-6}{5}\))4
tính:
a) ( \(\frac{3}{7}+\frac{1}{2}\))2
b) ( \(\frac{3}{4}-\frac{5}{6}\))2
c) \(\frac{5^4.20^4}{25^5.4^5}\)
d) ( \(\frac{-10}{3}\) )5. (\(\frac{-6}{5}\))4
Tính:
a) \(\frac{4^2.4^3}{2^{10}}\)
b) \(\frac{\left(0,6\right)^5}{\left(0,2\right)^5}\)
c) \(\frac{2^7.9^3}{6^5.8^2}\)
d) \(\frac{6^3+3.6^2+3^3}{-13}\)
e) \(\frac{5^4.20^4}{25^5.4^5}\)
HELP ME!
Bài 1) Rút gọn biểu thức
a) \(\frac{2^7.9^3}{6^5.8^2}\)
b) \(\frac{6^3+3.6^2+3^3}{-13}\)
c) \(\frac{5^4.20^4}{25^5.4^5}\)
d)(\(\frac{5^4-5^3}{125^4}\) )
Tính:a) left(frac{3}{7}+frac{1}{2}right)^2b) left(frac{3}{4}-frac{5}{6}right)^2c) frac{5^4.20^4}{25^5.4^5}d) left(frac{-10}{3}right)^5.left(frac{-6}{5}right)^4e) left(1+frac{2}{3}-frac{1}{4}right).left(frac{4}{5}-frac{3}{4}right)^2f) 2:left(frac{1}{2}-frac{2}{3}right)^3
Đọc tiếp
Tính:
a) \(\left(\frac{3}{7}+\frac{1}{2}\right)^2\)
b) \(\left(\frac{3}{4}-\frac{5}{6}\right)^2\)
c) \(\frac{5^4.20^4}{25^5.4^5}\)
d) \(\left(\frac{-10}{3}\right)^5.\left(\frac{-6}{5}\right)^4\)
e) \(\left(1+\frac{2}{3}-\frac{1}{4}\right).\left(\frac{4}{5}-\frac{3}{4}\right)^2\)
f) \(2:\left(\frac{1}{2}-\frac{2}{3}\right)^3\)
Thực hiện các phép tính :
a) 9,6.2dfrac{1}{2}-left(2.125-1dfrac{5}{12}right):dfrac{1}{4}
b) dfrac{5}{18}-1,456:dfrac{7}{25}+4,5.dfrac{4}{5}
c) left(dfrac{1}{2}+0,8-1dfrac{1}{3}right)left(2,3right)+4dfrac{7}{25}-1,28
d) left(-5right).12:left[left(-dfrac{1}{4}right)+dfrac{1}{2}:left(-2right)right]+1dfrac{1}{3}
Đọc tiếp
Thực hiện các phép tính :
a) \(9,6.2\dfrac{1}{2}-\left(2.125-1\dfrac{5}{12}\right):\dfrac{1}{4}\)
b) \(\dfrac{5}{18}-1,456:\dfrac{7}{25}+4,5.\dfrac{4}{5}\)
c) \(\left(\dfrac{1}{2}+0,8-1\dfrac{1}{3}\right)\left(2,3\right)+4\dfrac{7}{25}-1,28\)
d) \(\left(-5\right).12:\left[\left(-\dfrac{1}{4}\right)+\dfrac{1}{2}:\left(-2\right)\right]+1\dfrac{1}{3}\)
Thực hiện phép tính hợp lí nếu có thể
\(\dfrac{0,8:\left(\dfrac{4}{5}.1,25\right)}{0,64-\dfrac{1}{25}}+\dfrac{\left(1,08-\dfrac{2}{25}\right)}{\left(6\dfrac{5}{9}-3\dfrac{1}{4}\right).2\dfrac{2}{17}}+\left(1,2.0,5\right):\dfrac{4}{5}\)