Violympic toán 7
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tính nhanh
\(\dfrac{3^6.45^4-15^{13}:5^9}{27^4.25^3+45^6}\)
THỰC HIỆN PHÉP TÍNH MỘT CÁCH HỢP LÍ
B=\(\frac{3^6.45^4-15^{13}.5^{-9}}{27^4.25^3+45^6}\)
GIÚP VỚI.CẢM ƠN NHA!
Thực hiện phép tính: \(\frac{3^6.45^4-15^3.5^{-9}}{27^4.25^3+45^6}\)
Tính giá trị biểu thức:
a,Adfrac{3^6.45^4-15^{13}.5^{-9}}{27^4.25^3+45^6}
b,^{Bdfrac{left[left(6,2:0,31-dfrac{5}{6}.0,9right).0,2+0,15right]:12}{left(2+1dfrac{4}{11}.0,22:0,1right).dfrac{1}{33}}}
c,Cdfrac{left(dfrac{3}{4}right)^3+left(dfrac{5}{4}right)^3-5left(dfrac{4}{3}-dfrac{5}{4}right)}{left(dfrac{-5}{8}right)^2+left(dfrac{2}{3}right)^2-dfrac{5}{6}}
d,Dleft[dfrac{dfrac{17}{24}.9dfrac{1}{2}-3dfrac{1}{4}.dfrac{17}{24}}{3dfrac{1}{2}.2dfrac{13}{36}+2dfrac{13}{36}.2dfrac{3}{4}}-dfrac{1}{5}rig...
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Tính giá trị biểu thức:
a,\(A=\dfrac{3^6.45^4-15^{13}.5^{-9}}{27^4.25^3+45^6}\)
b,\(^{B=\dfrac{\left[\left(6,2:0,31-\dfrac{5}{6}.0,9\right).0,2+0,15\right]:12}{\left(2+1\dfrac{4}{11}.0,22:0,1\right).\dfrac{1}{33}}}\)
c,\(C=\dfrac{\left(\dfrac{3}{4}\right)^3+\left(\dfrac{5}{4}\right)^3-5\left(\dfrac{4}{3}-\dfrac{5}{4}\right)}{\left(\dfrac{-5}{8}\right)^2+\left(\dfrac{2}{3}\right)^2-\dfrac{5}{6}}\)
d,\(D=\left[\dfrac{\dfrac{17}{24}.9\dfrac{1}{2}-3\dfrac{1}{4}.\dfrac{17}{24}}{3\dfrac{1}{2}.2\dfrac{13}{36}+2\dfrac{13}{36}.2\dfrac{3}{4}}-\dfrac{1}{5}\right]^{-2}\)
Giúp em với chị @Nhã Doanh ới!!!!!!!!
Mai em phải đi thi rồi :((
\(\dfrac{(13\dfrac{1}{4}-2\dfrac{5}{27}-10\dfrac{5}{6}).230.\dfrac{1}{25}+46\dfrac{3}{4}}{(1\dfrac{3}{10}+\dfrac{10}{3}):(12\dfrac{1}{3}-14\dfrac{2}{7})}\)
\(\frac{\left(13\frac{1}{4}-2\frac{5}{27}-10\frac{5}{6}\right).230\frac{1}{25}+46\frac{3}{4}}{\left(1\frac{3}{7}+\frac{10}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)
tính" \(\dfrac{\left(13\dfrac{1}{4}-2\dfrac{5}{27}-10\dfrac{5}{6}\right).203\dfrac{1}{25}+46\dfrac{3}{4}}{\left(1\dfrac{3}{7}+\dfrac{10}{3}\right):\left(12\dfrac{1}{3}-14\dfrac{2}{7}\right)}\)
tính:
O = \(\dfrac{\left(13\dfrac{1}{4}-2\dfrac{5}{27}-10\dfrac{5}{6}\right).230\dfrac{1}{25}+46\dfrac{3}{4}}{\left(1\dfrac{3}{10}+\dfrac{10}{3}\right):\left(12\dfrac{1}{3}-14\dfrac{2}{7}\right)}\)
bài 1: tính
a) dfrac{5^4.20^4}{25^5.4^5} b)3,5-left(-dfrac{2}{7}right) c)left(dfrac{11}{12}:dfrac{33}{16}right).dfrac{3}{5} d)15.left(-dfrac{2}{3}right)^2.-dfrac{7}{3} e)left(dfrac{9}{25}-2.8right):left(3dfrac{4}{5}+0,2right) g)dfrac{21}{47}+dfrac{9}{45}+dfrac{26}{47}+dfrac{4}{5} h)dfrac{15}{12}+dfrac{5}{13}-dfrac{3}{12}-dfrac{18}{13} j)12.left(-dfrac{2}{3}right)^2+dfrac{4}{3} k)dfrac{13}{25}+dfrac{6}{41}-dfrac{38}{25}+dfrac{35}{41}-dfrac{1}{2} l)12,5.left(-dfrac{5}{7}right)+1,5.left(-...
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bài 1: tính
a) \(\dfrac{5^4.20^4}{25^5.4^5}\) b)3,5-\(\left(-\dfrac{2}{7}\right)\) c)\(\left(\dfrac{11}{12}:\dfrac{33}{16}\right).\dfrac{3}{5}\) d)\(15.\left(-\dfrac{2}{3}\right)^2.-\dfrac{7}{3}\) e)\(\left(\dfrac{9}{25}-2.8\right):\left(3\dfrac{4}{5}+0,2\right)\) g)\(\dfrac{21}{47}+\dfrac{9}{45}+\dfrac{26}{47}+\dfrac{4}{5}\) h)\(\dfrac{15}{12}+\dfrac{5}{13}-\dfrac{3}{12}-\dfrac{18}{13}\) j)12.\(\left(-\dfrac{2}{3}\right)^2+\dfrac{4}{3}\) k)\(\dfrac{13}{25}+\dfrac{6}{41}-\dfrac{38}{25}+\dfrac{35}{41}-\dfrac{1}{2}\) l)12,5.\(\left(-\dfrac{5}{7}\right)+1,5.\left(-\dfrac{5}{7}\right)\) m)\(\sqrt{\dfrac{64}{25}}.3\dfrac{1}{2}-\dfrac{3}{5}.3\dfrac{1}{2}\)