Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

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

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{2}{3} . \frac{10}{4}\\=\frac{2}{3} . \frac{5}{2}\\=\frac{2.5}{3.2}\\=\frac{10}{6}\\=\frac{5}{3}\)
2. \(\frac{10}{3} . \frac{8}{3}\\=\frac{10.8}{3.3}\\=\frac{80}{9}\)
3. \(\frac{11}{10} . \frac{12}{2}\\=\frac{11}{10} . \frac{6}{1}\\=\frac{11.6}{10.1}\\=\frac{66}{10}\\=\frac{33}{5}\)
4. \(\frac{11}{11} . \frac{9}{6}\\=\frac{1}{1} . \frac{3}{2}\\=\frac{1.3}{1.2}\\=\frac{3}{2}\)
5. \(\frac{11}{2} . \frac{3}{11}\\=\frac{11.3}{2.11}\\=\frac{33}{22}\\=\frac{3}{2}\)
6. \(\frac{4}{7} . \frac{6}{3}\\=\frac{4}{7} . \frac{2}{1}\\=\frac{4.2}{7.1}\\=\frac{8}{7}\)
7. \(\frac{6}{2} . \frac{10}{10}\\=\frac{3}{1} . \frac{1}{1}\\=\frac{3.1}{1.1}\\=\frac{3}{1}= 3\)
8. \(\frac{10}{9} . \frac{11}{11}\\=\frac{10}{9} . \frac{1}{1}\\=\frac{10.1}{9.1}\\=\frac{10}{9}\)
9. \(\frac{10}{3} . \frac{7}{10}\\=\frac{10.7}{3.10}\\=\frac{70}{30}\\=\frac{7}{3}\)
10. \(\frac{4}{4} . \frac{8}{4}\\=\frac{1}{1} . \frac{2}{1}\\=\frac{1.2}{1.1}\\=\frac{2}{1}= 2\)
11. \(\frac{5}{11} . \frac{4}{5}\\=\frac{5.4}{11.5}\\=\frac{20}{55}\\=\frac{4}{11}\)
12. \(\frac{6}{11} . \frac{9}{3}\\=\frac{6}{11} . \frac{3}{1}\\=\frac{6.3}{11.1}\\=\frac{18}{11}\)