Tính:

a)\(\left\{\left[\left(6,2:0,31-\frac{5}{6}.0,9\right).0,2+0,15\right]:0,2\right\}:\left[\left(2+1\frac{4}{11}:0,1\right).\frac{1}{33}\right]\)

b)\(0,4\left(3\right)+0,6\left(2\right)-2\frac{1}{2}.\left[\left(\frac{1}{2}+\frac{1}{3}:0,5\left(8\right)\right)\right]:\frac{50}{53}\)

c)\(\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{0,625-0,5+\frac{5}{11}+\frac{5}{12}}\)

Tính:

1,\(\frac{2}{5}+\left(-\frac{4}{5}\right)+\left(-\frac{1}{2}\right)\)

2,\(A=\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,625+0,5-\frac{5}{11}-\frac{5}{12}}+\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}\)

3,\(B=\frac{\frac{1}{3}-\frac{1}{7}-\frac{1}{13}}{\frac{2}{3}-\frac{2}{7}-\frac{2}{13}}.\frac{\frac{1}{3}-0,25+0,2}{1\frac{1}{6}-0,875+0,7}+\frac{6}{7}\)

a \(\left(\frac{7}{4}.\frac{-4}{5}+\frac{7}{2}.\frac{-1}{5}\right)\times50\%-0,1\)

b \(\left(2\frac{1}{3}+3\frac{1}{2}\right).0,2+25\%\)

Bài 1:

a) (-0,25) . 0,45 . 0,4 . (-0,125) . 0,55 . (-8)

b) [ 20,83 . 0,2 + (-9,17 . 0,2) ] : [ 2,47 . 0,5 - (-3,53 . 0,5) ]

c) \(\frac{(9\frac{3}{4}\div5,2+3,4\times2\frac{7}{34})\div(-1\frac{9}{16})}{\left(-0,31\right).8\frac{2}{5}-5,61\div\left(-27\frac{1}{2}\right)}\)

tính giá trị biểu thức (tính nhanh nếu có thể)

a,\(\left(\frac{7}{4}.\frac{-4}{5}+\frac{7}{2}.\frac{-1}{5}\right).50\%-0,1\)

b,\(\left(2\frac{1}{3}+3\frac{1}{2}\right).0,2+25\%\)

Muốn tick thì nhanh lên

Tính nhanh : 

a ) \(\left(\frac{2}{5}+\frac{2}{7}-\frac{2}{11}\right):\left(\frac{3}{7}-\frac{3}{11}+\frac{3}{5}\right)\)

b) \(\frac{0,125-\frac{1}{5}+\frac{1}{7}}{0,375-\frac{3}{5}+\frac{3}{7}}+\frac{\frac{1}{2}+\frac{1}{3}-0,2}{\frac{3}{4}+0,5-\frac{3}{10}}\)

Tính

a, \(\frac{\left(\frac{1}{6}\right)^2.6^2+\left(0,6\right)^5}{\left(0,2\right)^5}\)

b,  \(\left(-3\right)^2+\left(\frac{-1}{2}\right)^3-\left(3,5\right)^0\)

c, \(2\frac{1}{4}+\frac{2}{5}.0,3-\left(\frac{12}{5}-3\right)^2\)