Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

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

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{6}{11} . \frac{7}{4}\\=\frac{6.7}{11.4}\\=\frac{42}{44}\\=\frac{21}{22}\)
2. \(\frac{10}{6} . \frac{3}{4}\\=\frac{5}{3} . \frac{3}{4}\\=\frac{5.3}{3.4}\\=\frac{15}{12}\\=\frac{5}{4}\)
3. \(\frac{8}{11} . \frac{12}{5}\\=\frac{8.12}{11.5}\\=\frac{96}{55}\)
4. \(\frac{9}{5} . \frac{7}{2}\\=\frac{9.7}{5.2}\\=\frac{63}{10}\)
5. \(\frac{6}{12} . \frac{4}{3}\\=\frac{1}{2} . \frac{4}{3}\\=\frac{1.4}{2.3}\\=\frac{4}{6}\\=\frac{2}{3}\)
6. \(\frac{8}{4} . \frac{9}{6}\\=\frac{2}{1} . \frac{3}{2}\\=\frac{2.3}{1.2}\\=\frac{6}{2}\\=\frac{3}{1}= 3\)
7. \(\frac{12}{10} . \frac{8}{4}\\=\frac{6}{5} . \frac{2}{1}\\=\frac{6.2}{5.1}\\=\frac{12}{5}\)
8. \(\frac{6}{4} . \frac{3}{2}\\=\frac{3}{2} . \frac{3}{2}\\=\frac{3.3}{2.2}\\=\frac{9}{4}\)
9. \(\frac{3}{2} . \frac{3}{11}\\=\frac{3.3}{2.11}\\=\frac{9}{22}\)
10. \(\frac{7}{4} . \frac{4}{6}\\=\frac{7}{4} . \frac{2}{3}\\=\frac{7.2}{4.3}\\=\frac{14}{12}\\=\frac{7}{6}\)
11. \(\frac{3}{3} . \frac{11}{11}\\=\frac{1}{1} . \frac{1}{1}\\=\frac{1.1}{1.1}\\=\frac{1}{1}= 1\)
12. \(\frac{12}{12} . \frac{4}{2}\\=\frac{1}{1} . \frac{2}{1}\\=\frac{1.2}{1.1}\\=\frac{2}{1}= 2\)