Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

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

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{4}{4} . \frac{6}{5}\\=\frac{1}{1} . \frac{6}{5}\\=\frac{1.6}{1.5}\\=\frac{6}{5}\)
2. \(\frac{6}{5} . \frac{4}{9}\\=\frac{6.4}{5.9}\\=\frac{24}{45}\\=\frac{8}{15}\)
3. \(\frac{4}{6} . \frac{12}{11}\\=\frac{2}{3} . \frac{12}{11}\\=\frac{2.12}{3.11}\\=\frac{24}{33}\\=\frac{8}{11}\)
4. \(\frac{11}{7} . \frac{7}{12}\\=\frac{11.7}{7.12}\\=\frac{77}{84}\\=\frac{11}{12}\)
5. \(\frac{3}{11} . \frac{3}{2}\\=\frac{3.3}{11.2}\\=\frac{9}{22}\)
6. \(\frac{4}{4} . \frac{3}{2}\\=\frac{1}{1} . \frac{3}{2}\\=\frac{1.3}{1.2}\\=\frac{3}{2}\)
7. \(\frac{7}{5} . \frac{3}{6}\\=\frac{7}{5} . \frac{1}{2}\\=\frac{7.1}{5.2}\\=\frac{7}{10}\)
8. \(\frac{9}{9} . \frac{9}{9}\\=\frac{1}{1} . \frac{1}{1}\\=\frac{1.1}{1.1}\\=\frac{1}{1}= 1\)
9. \(\frac{10}{10} . \frac{6}{3}\\=\frac{1}{1} . \frac{2}{1}\\=\frac{1.2}{1.1}\\=\frac{2}{1}= 2\)
10. \(\frac{2}{8} . \frac{6}{3}\\=\frac{1}{4} . \frac{2}{1}\\=\frac{1.2}{4.1}\\=\frac{2}{4}\\=\frac{1}{2}\)
11. \(\frac{10}{11} . \frac{5}{4}\\=\frac{10.5}{11.4}\\=\frac{50}{44}\\=\frac{25}{22}\)
12. \(\frac{8}{5} . \frac{6}{4}\\=\frac{8}{5} . \frac{3}{2}\\=\frac{8.3}{5.2}\\=\frac{24}{10}\\=\frac{12}{5}\)