Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

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

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{4}{2} . \frac{4}{4}\\=\frac{2}{1} . \frac{1}{1}\\=\frac{2.1}{1.1}\\=\frac{2}{1}= 2\)
2. \(\frac{2}{5} . \frac{6}{8}\\=\frac{2}{5} . \frac{3}{4}\\=\frac{2.3}{5.4}\\=\frac{6}{20}\\=\frac{3}{10}\)
3. \(\frac{7}{5} . \frac{11}{10}\\=\frac{7.11}{5.10}\\=\frac{77}{50}\)
4. \(\frac{2}{3} . \frac{3}{6}\\=\frac{2}{3} . \frac{1}{2}\\=\frac{2.1}{3.2}\\=\frac{2}{6}\\=\frac{1}{3}\)
5. \(\frac{8}{3} . \frac{4}{4}\\=\frac{8}{3} . \frac{1}{1}\\=\frac{8.1}{3.1}\\=\frac{8}{3}\)
6. \(\frac{9}{10} . \frac{4}{2}\\=\frac{9}{10} . \frac{2}{1}\\=\frac{9.2}{10.1}\\=\frac{18}{10}\\=\frac{9}{5}\)
7. \(\frac{12}{12} . \frac{6}{8}\\=\frac{1}{1} . \frac{3}{4}\\=\frac{1.3}{1.4}\\=\frac{3}{4}\)
8. \(\frac{12}{3} . \frac{6}{12}\\=\frac{4}{1} . \frac{1}{2}\\=\frac{4.1}{1.2}\\=\frac{4}{2}\\=\frac{2}{1}= 2\)
9. \(\frac{10}{8} . \frac{7}{7}\\=\frac{5}{4} . \frac{1}{1}\\=\frac{5.1}{4.1}\\=\frac{5}{4}\)
10. \(\frac{12}{6} . \frac{8}{6}\\=\frac{2}{1} . \frac{4}{3}\\=\frac{2.4}{1.3}\\=\frac{8}{3}\)
11. \(\frac{5}{10} . \frac{3}{3}\\=\frac{1}{2} . \frac{1}{1}\\=\frac{1.1}{2.1}\\=\frac{1}{2}\)
12. \(\frac{10}{6} . \frac{9}{9}\\=\frac{5}{3} . \frac{1}{1}\\=\frac{5.1}{3.1}\\=\frac{5}{3}\)