Thực hiện phép tính:a) \(2+\frac{5}{4}-\frac{1}{3}\) b) \(\left(2\frac{1}{3}-0,5\right).\frac{2}{3}-\left(-\frac{1}{2}\right)^2\) c) \(\frac{7}{36}-\frac{8}{-9}+\frac{2}{3}\) d) \(\frac{3}{4}.\left(\frac{6}{-5}\right)-\frac{1}{8}\) e) \(1\frac{1}{4}:\left(1+\frac{2}{3}\right)\) g) \(2+\frac{4}{5}-\frac{7}{12}\) i) \(\frac{7}{12}+\frac{5}{12}:6-\frac{11}{36}\) f) \(\frac{2}{3}-0,25:\frac{3}{4}+\frac{5}{8}.\left(-2\right)^2\) ...
Đọc tiếp
Thực hiện phép tính:
a) \(2+\frac{5}{4}-\frac{1}{3}\) b) \(\left(2\frac{1}{3}-0,5\right).\frac{2}{3}-\left(-\frac{1}{2}\right)^2\) c) \(\frac{7}{36}-\frac{8}{-9}+\frac{2}{3}\) d) \(\frac{3}{4}.\left(\frac{6}{-5}\right)-\frac{1}{8}\) e) \(1\frac{1}{4}:\left(1+\frac{2}{3}\right)\) g) \(2+\frac{4}{5}-\frac{7}{12}\) i) \(\frac{7}{12}+\frac{5}{12}:6-\frac{11}{36}\) f) \(\frac{2}{3}-0,25:\frac{3}{4}+\frac{5}{8}.\left(-2\right)^2\) h) \(\frac{4}{7}+\frac{5}{6}:5-0,375.\left(-2\right)^2\)
a)\(=\frac{13}{4}-\frac{1}{3}\)
\(=\frac{35}{12}\)
b)\(=\left(\frac{7}{6}-\frac{1}{2}\right).\frac{2}{3}-\frac{1}{4}\)
\(=\frac{2}{3}.\frac{2}{3}-\frac{1}{4}\left(=1-\frac{1}{4}\right)\)
\(=\frac{4}{9}-\frac{1}{4}\left(=\frac{3}{4}\right)\)
\(=\frac{7}{36}\)