fracciones

Primero ESO

Efectuar las siguientes operaciones y simplifica el resultado:

  1. $ \dfrac{1}{2}-\dfrac{1}{3}-\left[1+\dfrac{1}{2}-\left( 2+\dfrac{1}{3}\right) \right] -\left( 1-\dfrac{7}{5}\right) $


  2. $ 1-\dfrac{3}{8}+\dfrac{2}{\dfrac{4}{3}-1} \cdot \dfrac{1}{2} \cdot \left( \dfrac{4}{6} -2\right)$


  3. $ \dfrac{\left( \dfrac{3}{2}+\dfrac{1}{3}\right) \cdot \left( \dfrac{6}{5}-1\right)}{2} $


  4. $ \dfrac{2+\dfrac{\dfrac{1}{2}}{\dfrac{7}{3}-2}-1}{4-\dfrac{5}{8}}$


  5. $ \left( 3-\dfrac{1}{8}\right) \cdot 6 -\dfrac{2}{3} \cdot \left[ 4-3+\dfrac{2}{7}\cdot \left( \dfrac{3}{2}-\dfrac{9}{6} \right) \right] $


  6. $ \dfrac{\dfrac{2}{3}-\dfrac{-7}{2}-\dfrac{5}{6}+\dfrac{1}{4}}{\dfrac{-4}{3}+\dfrac{2}{3}-\dfrac{1}{6}}$


  7. $ \dfrac{\left( \dfrac{1}{2}+\dfrac{1}{2}\right) \cdot \left( \dfrac{1}{2}-\dfrac{1}{4}\right) +5}{-3\cdot \dfrac{4}{\dfrac{3}{5}+1}}$


  8. $ \left( \dfrac{5}{4}\cdot \dfrac{7}{2}-\dfrac{3}{8}\right) \cdot \left( \dfrac{5}{4}-\dfrac{7}{2} \cdot \dfrac{7}{8}\right) $


  9. $ 1-\dfrac{3}{8}+\dfrac{2}{\dfrac{4}{3}-1} \cdot \dfrac{1}{2} \cdot \left( \dfrac{4}{6} -2\right)$






2008-03-04