1\(\dfrac{13}{15}.0,75-\left(\dfrac{104}{195}+25\%\right).\dfrac{24}{47}-3\dfrac{12}{13}:3\)
=\(\dfrac{28}{15}.\dfrac{3}{4}-\dfrac{47}{60}.\dfrac{24}{47}-\dfrac{51}{13}.\dfrac{1}{3}\)
=\(\dfrac{7}{5}-\dfrac{2}{5}-\dfrac{17}{13}\)
=\(1-\dfrac{17}{13}\)
=\(-\dfrac{4}{13}\)
\(1\dfrac{13}{15}.0.75-\left(\dfrac{104}{195}+\dfrac{25}{100}\right).\dfrac{24}{47}-3\dfrac{12}{13}:3\)
Trả lời giúp mình với !
Thực hiện phép tính:
a) \(1\dfrac{13}{15}\). (-5)2. 3 + (\(\dfrac{8}{15}-\dfrac{19}{60}\)) : \(1\dfrac{23}{24}\)
b) \(\dfrac{\left(\dfrac{11^2}{200}+0.414:0.01\right)}{\dfrac{1}{12}-37.25+3\dfrac{1}{6}}\)
nhanh nhé mik cần gấp!
tính
\(\left(-25\%+0,75+\dfrac{7}{12}\right):\left(-2\dfrac{1}{8}\right)\)
Bài 1 : Thực hiện phép tính ( tính hợp lý nếu có thể )
a ) \(\dfrac{1}{12}+\dfrac{3}{4}\)
b ) \(\dfrac{-4}{7}.1\dfrac{1}{2}\)
c )\(\dfrac{7}{9}+\left(\dfrac{2}{3}+\dfrac{-7}{9}\right)\)
d )\(\dfrac{2}{3}-\dfrac{1}{3}:\dfrac{3}{4}\)
e )\(\dfrac{-7}{25}.\dfrac{11}{13}+\dfrac{-7}{25}.\dfrac{2}{13}\)
g )\(2\dfrac{2}{5}.0,25-\left(\dfrac{11}{20}+75\%\right):\dfrac{13}{5}\)
Thực hiện phép tính ( tính nhanh nếu có thể)
a) \(\dfrac{-7}{25}\). \(\dfrac{11}{13}\)+ \(\dfrac{-7}{25}\). \(\dfrac{2}{13}\)- \(\dfrac{18}{25}\)
b) \(\dfrac{5}{7}\). \(\dfrac{1}{3}\) - \(\dfrac{5}{7}\). \(\dfrac{1}{4}\) - \(\dfrac{5}{7}\). \(\dfrac{1}{12}\)
c) 5\(\dfrac{2}{5}\). 4\(\dfrac{2}{7}\) + 5\(\dfrac{5}{7}\). 5\(\dfrac{2}{5}\)
d) 75% - 1\(\dfrac{1}{2}\) + 0,5 : \(\dfrac{5}{12}\) - \(\left(\dfrac{-1}{2}\right)^2\)
Thực hiện phép tính : \(\dfrac{3}{2}-\dfrac{5}{6}-\dfrac{9}{20}-\dfrac{13}{42}+\dfrac{11}{30}+\dfrac{15}{56}+\dfrac{7}{12}\)
\(H=\dfrac{1}{7}.\left(-0,28\right)+\dfrac{2}{14}.16\%+\left(-3\dfrac{1}{7}\right).\dfrac{1}{25}\)
tính
c ) \(\dfrac{5}{15}-\dfrac{-4}{20}-\dfrac{9}{36}\)
d ) \(-2\dfrac{1}{4}.\left(3\dfrac{5}{12}-1\dfrac{2}{9}\right)\)
a/\(\dfrac{5}{2\times1}+\dfrac{4}{1\times11}+\dfrac{3}{11\times2}+\dfrac{1}{2\times15}+\dfrac{13}{15\times4}\)
