Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

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

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{5}{10} . \frac{6}{3}\\=\frac{1}{2} . \frac{2}{1}\\=\frac{1.2}{2.1}\\=\frac{2}{2}\\=\frac{1}{1}= 1\)
2. \(\frac{4}{10} . \frac{12}{4}\\=\frac{2}{5} . \frac{3}{1}\\=\frac{2.3}{5.1}\\=\frac{6}{5}\)
3. \(\frac{11}{10} . \frac{10}{2}\\=\frac{11}{10} . \frac{5}{1}\\=\frac{11.5}{10.1}\\=\frac{55}{10}\\=\frac{11}{2}\)
4. \(\frac{6}{7} . \frac{9}{10}\\=\frac{6.9}{7.10}\\=\frac{54}{70}\\=\frac{27}{35}\)
5. \(\frac{10}{3} . \frac{8}{5}\\=\frac{10.8}{3.5}\\=\frac{80}{15}\\=\frac{16}{3}\)
6. \(\frac{2}{8} . \frac{8}{4}\\=\frac{1}{4} . \frac{2}{1}\\=\frac{1.2}{4.1}\\=\frac{2}{4}\\=\frac{1}{2}\)
7. \(\frac{10}{7} . \frac{4}{8}\\=\frac{10}{7} . \frac{1}{2}\\=\frac{10.1}{7.2}\\=\frac{10}{14}\\=\frac{5}{7}\)
8. \(\frac{6}{7} . \frac{2}{11}\\=\frac{6.2}{7.11}\\=\frac{12}{77}\)
9. \(\frac{12}{11} . \frac{10}{12}\\=\frac{12}{11} . \frac{5}{6}\\=\frac{12.5}{11.6}\\=\frac{60}{66}\\=\frac{10}{11}\)
10. \(\frac{8}{4} . \frac{10}{7}\\=\frac{2}{1} . \frac{10}{7}\\=\frac{2.10}{1.7}\\=\frac{20}{7}\)
11. \(\frac{7}{7} . \frac{2}{5}\\=\frac{1}{1} . \frac{2}{5}\\=\frac{1.2}{1.5}\\=\frac{2}{5}\)
12. \(\frac{10}{11} . \frac{6}{9}\\=\frac{10}{11} . \frac{2}{3}\\=\frac{10.2}{11.3}\\=\frac{20}{33}\)