Breuken verm. (reeks 2)

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Vermenigvuldig de breuken

  1. \(\frac{10}{-19} . \left(\frac{-11}{4}\right)\)
  2. \(\frac{10}{7} . \left(\frac{2}{-9}\right)\)
  3. \(\frac{-8}{-13} . \left(\frac{-2}{-12}\right)\)
  4. \(\frac{9}{10} . \left(\frac{11}{-6}\right)\)
  5. \(\frac{9}{-5} . \left(\frac{-4}{4}\right)\)
  6. \(\frac{4}{-15} . \left(\frac{2}{-3}\right)\)
  7. \(\frac{-10}{-19} . \left(\frac{-11}{-6}\right)\)
  8. \(\frac{-6}{-7} . \left(\frac{11}{-11}\right)\)
  9. \(\frac{2}{11} . \left(\frac{-3}{2}\right)\)
  10. \(\frac{-7}{11} . \frac{3}{5}\)
  11. \(\frac{-6}{7} . \frac{6}{10}\)
  12. \(\frac{2}{-11} . \left(\frac{5}{-3}\right)\)

Vermenigvuldig de breuken

Verbetersleutel

  1. \(\frac{10}{-19} . \left(\frac{-11}{4}\right)\\=+\frac{10.11}{19.4}\\=\frac{110}{76}\\=\frac{55}{38}\)
  2. \(\frac{10}{7} . \left(\frac{2}{-9}\right)\\=-\frac{10.2}{7.9}\\=-\frac{20}{63}\)
  3. \(\frac{-8}{-13} . \left(\frac{-2}{-12}\right)\\=+\frac{8}{13}.\frac{1}{6}\\=+\frac{8.1}{13.6}\\=\frac{8}{78}\\=\frac{4}{39}\)
  4. \(\frac{9}{10} . \left(\frac{11}{-6}\right)\\=-\frac{9.11}{10.6}\\=-\frac{99}{60}\\=-\frac{33}{20}\)
  5. \(\frac{9}{-5} . \left(\frac{-4}{4}\right)\\=+\frac{9}{5}.\frac{1}{1}\\=+\frac{9.1}{5.1}\\=\frac{9}{5}\)
  6. \(\frac{4}{-15} . \left(\frac{2}{-3}\right)\\=+\frac{4.2}{15.3}\\=\frac{8}{45}\)
  7. \(\frac{-10}{-19} . \left(\frac{-11}{-6}\right)\\=+\frac{10.11}{19.6}\\=\frac{110}{114}\\=\frac{55}{57}\)
  8. \(\frac{-6}{-7} . \left(\frac{11}{-11}\right)\\=-\frac{6}{7}.\frac{1}{1}\\=-\frac{6.1}{7.1}\\=-\frac{6}{7}\)
  9. \(\frac{2}{11} . \left(\frac{-3}{2}\right)\\=-\frac{2.3}{11.2}\\=-\frac{6}{22}\\=-\frac{3}{11}\)
  10. \(\frac{-7}{11} . \frac{3}{5}\\=-\frac{7.3}{11.5}\\=-\frac{21}{55}\)
  11. \(\frac{-6}{7} . \frac{6}{10}\\=-\frac{6}{7}.\frac{3}{5}\\=-\frac{6.3}{7.5}\\=-\frac{18}{35}\)
  12. \(\frac{2}{-11} . \left(\frac{5}{-3}\right)\\=+\frac{2.5}{11.3}\\=\frac{10}{33}\)
Oefeningengenerator vanhoeckes.be/wiskunde 2022-09-25 10:27:46