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tinh bằng cách thuật tiện nhất
\(\frac{1}{10}x\frac{2}{9}x\frac{3}{8}x\frac{4}{7}x\frac{5}{6}x\frac{6}{5}x\frac{7}{4}x\frac{8}{3}x\frac{9}{2}\)
\(A=\left(6:\frac{3}{5}-1\frac{1}{6}x\frac{6}{7}\right):\left(4\frac{1}{5}x\frac{10}{11}+5\frac{2}{11}\right)\)\(B=\left(1-\frac{1}{2}\right)x\left(1-\frac{1}{4}\right)x.......x\left(1-\frac{1}{2015}\right)x\left(1-\frac{1}{2016}\right)\)
\(C=5\frac{9}{10}:\frac{3}{2}-\left(2\frac{1}{3}x4\frac{1}{2}-2x2\frac{1}{3}\right):\frac{7}{4}\)
\(1\frac{1}{3}\)x \(2\frac{1}{4}\)x \(3\frac{1}{5}\)x \(4\frac{1}{6}\)x \(5\frac{1}{7}\)x \(6\frac{1}{8}\)x \(7\frac{1}{9}\)x \(8\frac{1}{10}\)
Tính nhanh
a)\(\frac{11}{15}+\frac{5}{7}+\frac{2}{7}+\frac{4}{15}\)
b)\(\frac{5}{9}x\frac{1}{2}x\frac{5}{9}x\frac{6}{4}\)
c)\(\frac{7}{8}:\frac{1}{2}+\frac{9}{8}:\frac{1}{2}\)
d)\(\frac{17}{10}+\frac{1}{2}-\frac{7}{10}\)
tính nhanh
\(a,\frac{11}{15}+\frac{5}{7}+\frac{2}{7}+\frac{4}{15}\)
\(b,\frac{5}{9}x\frac{1}{2}+\frac{5}{9}x\frac{6}{4}\)
\(c,\frac{7}{8}:\frac{1}{2}+\frac{9}{8}:\frac{1}{2}\)
\(d,\frac{17}{10}+\frac{1}{2}-\frac{7}{10}\)
Tính nhanh
a)\(\frac{11}{15}+\frac{5}{7}+\frac{2}{7}+\frac{4}{15}\)
b)\(\frac{5}{9}x\frac{1}{2}+\frac{5}{9}x\frac{6}{4}\)
c)\(\frac{7}{8}:\frac{1}{2}+\frac{9}{8}:\frac{1}{2}\)
d)\(\frac{17}{10}+\frac{1}{2}-\frac{7}{10}\)
(6:\(\frac{3}{5}\)-\(1\frac{1}{7}\)x \(\frac{7}{8}\)):(\(4\frac{1}{5}\)x \(\frac{10}{11}\)+\(5\frac{2}{11}\)) x \(1\frac{2}{5}\)x\(2\frac{1}{7}\)
\(y=\frac{6:\frac{3}{5}-1\frac{1}{6}x\frac{6}{7}}{4\frac{1}{5}x\frac{10}{11}+5\frac{2}{11}}\)=?
HELP ME! 1.frac{3}{4}xfrac{8}{5}:1frac{1}{6}2frac{1}{3}x1frac{1}{4}-frac{7}{5}4frac{2}{3}+1frac{1}{4}+2frac{1}{3}+2frac{3}{7} 2. x.frac{1}{2}frac{3}{4}+frac{1}{5}x-frac{1}{5}frac{2}{3}.frac{9}{4}x.frac{1}{5}+frac{2}{3}frac{5}{4}frac{13}{5}:x-frac{1}{2}frac{4}{5}.frac{15}{16}x:frac{4}{9}+frac{1}{3}frac{2}{5}.1frac{13}{2}Chú ý: Dấu chấm là dấu nhân giúp mị với
Đọc tiếp
\(HELP\) \(ME\)\(!\)
1.
\(\frac{3}{4}x\frac{8}{5}:1\frac{1}{6}=\)\(2\frac{1}{3}x1\frac{1}{4}-\frac{7}{5}=\)\(4\frac{2}{3}+1\frac{1}{4}+2\frac{1}{3}+2\frac{3}{7}=\)2.
\(x.\frac{1}{2}=\frac{3}{4}+\frac{1}{5}\)\(x-\frac{1}{5}=\frac{2}{3}.\frac{9}{4}\)\(x.\frac{1}{5}+\frac{2}{3}=\frac{5}{4}\)\(\frac{13}{5}:x-\frac{1}{2}=\frac{4}{5}.\frac{15}{16}\)\(x:\frac{4}{9}+\frac{1}{3}=\frac{2}{5}.1\frac{13}{2}\)Chú ý: Dấu chấm là dấu nhângiúp mị với