Breuken verm. (reeks 2)

Hoofdmenu Eentje per keer  🖨

Vermenigvuldig de breuken

1. \(\frac{5}{6} . \left(\frac{-8}{-8}\right)\)
2. \(\frac{-10}{-11} . \left(\frac{-12}{-6}\right)\)
3. \(\frac{8}{17} . \left(\frac{-5}{-2}\right)\)
4. \(\frac{-11}{10} . \left(\frac{5}{-2}\right)\)
5. \(\frac{12}{-7} . \left(\frac{-4}{2}\right)\)
6. \(\frac{-4}{-5} . \frac{11}{10}\)
7. \(\frac{-5}{-4} . \frac{2}{7}\)
8. \(\frac{10}{13} . \left(\frac{-11}{4}\right)\)
9. \(\frac{9}{-19} . \left(\frac{-10}{7}\right)\)
10. \(\frac{-6}{-5} . \frac{5}{7}\)
11. \(\frac{-12}{5} . \left(\frac{-3}{7}\right)\)
12. \(\frac{-3}{8} . \frac{12}{8}\)

---

Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{5}{6} . \left(\frac{-8}{-8}\right)\\=+\frac{5}{6}.\frac{1}{1}\\=+\frac{5.1}{6.1}\\=\frac{5}{6}\)
2. \(\frac{-10}{-11} . \left(\frac{-12}{-6}\right)\\=+\frac{10}{11}.\frac{2}{1}\\=+\frac{10.2}{11.1}\\=\frac{20}{11}\)
3. \(\frac{8}{17} . \left(\frac{-5}{-2}\right)\\=+\frac{8.5}{17.2}\\=\frac{40}{34}\\=\frac{20}{17}\)
4. \(\frac{-11}{10} . \left(\frac{5}{-2}\right)\\=+\frac{11.5}{10.2}\\=\frac{55}{20}\\=\frac{11}{4}\)
5. \(\frac{12}{-7} . \left(\frac{-4}{2}\right)\\=+\frac{12}{7}.\frac{2}{1}\\=+\frac{12.2}{7.1}\\=\frac{24}{7}\)
6. \(\frac{-4}{-5} . \frac{11}{10}\\=+\frac{4.11}{5.10}\\=\frac{44}{50}\\=\frac{22}{25}\)
7. \(\frac{-5}{-4} . \frac{2}{7}\\=+\frac{5.2}{4.7}\\=\frac{10}{28}\\=\frac{5}{14}\)
8. \(\frac{10}{13} . \left(\frac{-11}{4}\right)\\=-\frac{10.11}{13.4}\\=-\frac{110}{52}\\=-\frac{55}{26}\)
9. \(\frac{9}{-19} . \left(\frac{-10}{7}\right)\\=+\frac{9.10}{19.7}\\=\frac{90}{133}\)
10. \(\frac{-6}{-5} . \frac{5}{7}\\=+\frac{6.5}{5.7}\\=\frac{30}{35}\\=\frac{6}{7}\)
11. \(\frac{-12}{5} . \left(\frac{-3}{7}\right)\\=+\frac{12.3}{5.7}\\=\frac{36}{35}\)
12. \(\frac{-3}{8} . \frac{12}{8}\\=-\frac{3}{8}.\frac{3}{2}\\=-\frac{3.3}{8.2}\\=-\frac{9}{16}\)