Bài 1: Tính
\(\frac{3}{8}.19\frac{1}{3}-\frac{3}{8}.33\frac{1}{3}\)

\(1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0,5+\frac{16}{21}\)

\(\frac{21}{47}+\frac{9}{45}+\frac{26}{47}+\frac{4}{5}\)

\(\frac{15}{12}+\frac{5}{13}-\frac{3}{12}-\frac{18}{13}\)

\(\frac{11}{24}-\frac{5}{41}+\frac{13}{24}+0,5-\frac{36}{41}\)

\(\left(-\frac{3}{4}+\frac{2}{3}\right):\frac{5}{11}+\left(-\frac{1}{4}+\frac{1}{3}\right):\frac{5}{11}\)

\(\left(-3\right)^2.\left(\frac{3}{4}-0,25\right)-\left(3\frac{1}{2}-1\frac{1}{2}\right)\)

Tìm x biết:

a) \(\frac{155x-24}{51}\)+\(\frac{185x-48}{57}\)+\(\frac{205x-3}{61}\)= 16

b) \(\frac{56x+95}{37}\)+\(\frac{136x+120}{57}\)+ \(\frac{216x+187}{67}\)= 9

c)\(\frac{22x-15}{21}\)+\(\frac{26x-25}{23}\)+\(\frac{34x+9}{27}\)= 14

d) \(\frac{2019-x}{9}\)+\(\frac{19-x}{2000}\)+\(\frac{2009-x}{10}\)+\(\frac{4x}{2019}\)= 1

LŨY THỪA

Bài 1: Tính

\(1.\frac{16^2}{4^5}\)          \(17.\frac{9^3}{81^4}\)

\(2.\frac{4^5}{8^3}\)              \(18.\frac{8^4}{4^3}\)

\(3.\frac{16^6}{8^3}\)             \(19.\frac{8^4}{2^3}\)

\(4.\frac{32^3}{16^5}\)

\(5.\frac{32^5}{64^6}\)

\(6.\frac{27^5}{9^4}\)

\(7.\frac{9^6}{27^5}\)

\(8.\frac{81^5}{9^6}\)

\(9.\frac{27^4}{81^5}\)

\(10.\frac{81^5}{27^6}\)

\(11.\frac{25^6}{125^3}\)

\(12.\frac{4^7}{8^3}\)

\(13.\frac{8^4}{16^3}\)

\(14.\frac{8^5}{64^3}\)

\(15.\frac{16^6}{8^4}\)

\(16.\frac{8^8}{4^6}\)

Bài 1: Thực hiện phép tính( bằng cahcs hợp lí nếu có thể)

\(a)\frac{7}{25}+\frac{4}{13}-\frac{5}{2}+\frac{18}{25}-1\frac{4}{13}\)

\(b)12-8.\left(\frac{3}{2}\right)^3\)

\(c)100\times\sqrt{0,04}+\sqrt{\frac{25}{16}}\)

\(d)\frac{1}{4}+\frac{3}{4}.\frac{5}{6}\)

\(e)3,75.7,2+2,8.3,75\)

\(f)\frac{1}{2}\sqrt{4}-\sqrt{25}\)

\(g)(\frac{1}{9})^{2005}.9^{2005}-96^2:24^2\)

\(h)\frac{15}{34}+\frac{7}{21}+\frac{19}{34}-\frac{20}{15}+\frac{3}{7}\)

\(k)\left(-3,5\right).\left(-7,2\right)+\left(-3,15\right).12,4+4,8.\left(-3,15\right)\)

\(l)16\frac{2}{7}:\left(-\frac{2}{5}\right)-28\frac{2}{7}:\left(-\frac{2}{5}\right)\)

\(m)\left(-\frac{1}{2}\right)^3+\frac{1}{2}:5\)

\(n)1\frac{1}{23}+\frac{2}{21}-\frac{1}{23}+\frac{19}{21}+2013^0\)

\(h)\frac{-5}{9}.\left(\frac{3}{10}-\frac{2}{5}\right)\)

\(i)\frac{1}{2}\sqrt{64}-\sqrt{\frac{4}{25}+1^{2012}}\)

Giải Hộ Mk vs Mk đng cần gấp để nộp

HELP MEEEEEEEEEEEEEEEEEEEE

*so sánh: 

a)\(\frac{-12}{17}\)và \(\frac{13}{-18}\)

b) \(\frac{-17}{26}\)và\(\frac{-16}{27}\)

* Tính hợp lí 

\(\frac{2}{39}+\frac{1}{15}+\frac{2}{153}\)/  \(\frac{1}{34}+\frac{3}{20}+\frac{3}{26}\):   \(1+\frac{2}{71}\frac{5}{121}\)/ \(\frac{65}{121}-\frac{26}{71}-13\)

Tính nhanh

a)\(\frac{1}{3}\)-\(\frac{3}{4}\)-( -\(\frac{3}{5}\)) +\(\frac{1}{64}\)-\(\frac{2}{9}\)-\(\frac{1}{36}\)+\(\frac{1}{15}\)

b)\(\frac{1}{3}\)-\(\frac{3}{5}\)+\(\frac{5}{7}\)-\(\frac{7}{9}\)+\(\frac{9}{11}\)-\(\frac{11}{13}\)+\(\frac{13}{15}\)+\(\frac{11}{13}\)-\(\frac{9}{11}\)-\(\frac{5}{7}\)+\(\frac{3}{5}\)-\(\frac{1}{3}\)

c)\(\frac{1}{99}\)-\(\frac{1}{99.98}\)-\(\frac{1}{98.97}\)-\(\frac{1}{97.96}\)-...-\(\frac{1}{3.2}\)-\(\frac{1}{3.1}\)

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