Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

1. \(\frac{10}{8} . \frac{10}{10}\)
2. \(\frac{5}{2} . \frac{6}{9}\)
3. \(\frac{4}{6} . \frac{7}{6}\)
4. \(\frac{10}{2} . \frac{11}{10}\)
5. \(\frac{4}{10} . \frac{4}{5}\)
6. \(\frac{4}{11} . \frac{6}{5}\)
7. \(\frac{10}{8} . \frac{8}{7}\)
8. \(\frac{8}{11} . \frac{5}{7}\)
9. \(\frac{5}{9} . \frac{6}{10}\)
10. \(\frac{4}{6} . \frac{9}{6}\)
11. \(\frac{3}{8} . \frac{8}{7}\)
12. \(\frac{4}{3} . \frac{2}{6}\)

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{10}{8} . \frac{10}{10}\\=\frac{5}{4} . \frac{1}{1}\\=\frac{5.1}{4.1}\\=\frac{5}{4}\)
2. \(\frac{5}{2} . \frac{6}{9}\\=\frac{5}{2} . \frac{2}{3}\\=\frac{5.2}{2.3}\\=\frac{10}{6}\\=\frac{5}{3}\)
3. \(\frac{4}{6} . \frac{7}{6}\\=\frac{2}{3} . \frac{7}{6}\\=\frac{2.7}{3.6}\\=\frac{14}{18}\\=\frac{7}{9}\)
4. \(\frac{10}{2} . \frac{11}{10}\\=\frac{5}{1} . \frac{11}{10}\\=\frac{5.11}{1.10}\\=\frac{55}{10}\\=\frac{11}{2}\)
5. \(\frac{4}{10} . \frac{4}{5}\\=\frac{2}{5} . \frac{4}{5}\\=\frac{2.4}{5.5}\\=\frac{8}{25}\)
6. \(\frac{4}{11} . \frac{6}{5}\\=\frac{4.6}{11.5}\\=\frac{24}{55}\)
7. \(\frac{10}{8} . \frac{8}{7}\\=\frac{5}{4} . \frac{8}{7}\\=\frac{5.8}{4.7}\\=\frac{40}{28}\\=\frac{10}{7}\)
8. \(\frac{8}{11} . \frac{5}{7}\\=\frac{8.5}{11.7}\\=\frac{40}{77}\)
9. \(\frac{5}{9} . \frac{6}{10}\\=\frac{5}{9} . \frac{3}{5}\\=\frac{5.3}{9.5}\\=\frac{15}{45}\\=\frac{1}{3}\)
10. \(\frac{4}{6} . \frac{9}{6}\\=\frac{2}{3} . \frac{3}{2}\\=\frac{2.3}{3.2}\\=\frac{6}{6}\\=\frac{1}{1}= 1\)
11. \(\frac{3}{8} . \frac{8}{7}\\=\frac{3.8}{8.7}\\=\frac{24}{56}\\=\frac{3}{7}\)
12. \(\frac{4}{3} . \frac{2}{6}\\=\frac{4}{3} . \frac{1}{3}\\=\frac{4.1}{3.3}\\=\frac{4}{9}\)