Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

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

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{8}{6} . \frac{3}{11}\\=\frac{4}{3} . \frac{3}{11}\\=\frac{4.3}{3.11}\\=\frac{12}{33}\\=\frac{4}{11}\)
2. \(\frac{3}{2} . \frac{11}{10}\\=\frac{3.11}{2.10}\\=\frac{33}{20}\)
3. \(\frac{10}{4} . \frac{8}{5}\\=\frac{5}{2} . \frac{8}{5}\\=\frac{5.8}{2.5}\\=\frac{40}{10}\\=\frac{4}{1}= 4\)
4. \(\frac{5}{3} . \frac{10}{9}\\=\frac{5.10}{3.9}\\=\frac{50}{27}\)
5. \(\frac{7}{3} . \frac{4}{10}\\=\frac{7}{3} . \frac{2}{5}\\=\frac{7.2}{3.5}\\=\frac{14}{15}\)
6. \(\frac{3}{8} . \frac{7}{2}\\=\frac{3.7}{8.2}\\=\frac{21}{16}\)
7. \(\frac{3}{4} . \frac{10}{10}\\=\frac{3}{4} . \frac{1}{1}\\=\frac{3.1}{4.1}\\=\frac{3}{4}\)
8. \(\frac{9}{6} . \frac{8}{6}\\=\frac{3}{2} . \frac{4}{3}\\=\frac{3.4}{2.3}\\=\frac{12}{6}\\=\frac{2}{1}= 2\)
9. \(\frac{10}{5} . \frac{3}{11}\\=\frac{2}{1} . \frac{3}{11}\\=\frac{2.3}{1.11}\\=\frac{6}{11}\)
10. \(\frac{12}{5} . \frac{6}{12}\\=\frac{12}{5} . \frac{1}{2}\\=\frac{12.1}{5.2}\\=\frac{12}{10}\\=\frac{6}{5}\)
11. \(\frac{8}{6} . \frac{10}{9}\\=\frac{4}{3} . \frac{10}{9}\\=\frac{4.10}{3.9}\\=\frac{40}{27}\)
12. \(\frac{9}{12} . \frac{9}{6}\\=\frac{3}{4} . \frac{3}{2}\\=\frac{3.3}{4.2}\\=\frac{9}{8}\)