Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

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

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{4}{2} . \frac{11}{12}\\=\frac{2}{1} . \frac{11}{12}\\=\frac{2.11}{1.12}\\=\frac{22}{12}\\=\frac{11}{6}\)
2. \(\frac{3}{6} . \frac{2}{12}\\=\frac{1}{2} . \frac{1}{6}\\=\frac{1.1}{2.6}\\=\frac{1}{12}\)
3. \(\frac{8}{3} . \frac{2}{11}\\=\frac{8.2}{3.11}\\=\frac{16}{33}\)
4. \(\frac{12}{2} . \frac{10}{6}\\=\frac{6}{1} . \frac{5}{3}\\=\frac{6.5}{1.3}\\=\frac{30}{3}\\=\frac{10}{1}= 10\)
5. \(\frac{11}{8} . \frac{10}{8}\\=\frac{11}{8} . \frac{5}{4}\\=\frac{11.5}{8.4}\\=\frac{55}{32}\)
6. \(\frac{8}{10} . \frac{11}{11}\\=\frac{4}{5} . \frac{1}{1}\\=\frac{4.1}{5.1}\\=\frac{4}{5}\)
7. \(\frac{5}{2} . \frac{4}{12}\\=\frac{5}{2} . \frac{1}{3}\\=\frac{5.1}{2.3}\\=\frac{5}{6}\)
8. \(\frac{5}{4} . \frac{6}{12}\\=\frac{5}{4} . \frac{1}{2}\\=\frac{5.1}{4.2}\\=\frac{5}{8}\)
9. \(\frac{2}{5} . \frac{12}{5}\\=\frac{2.12}{5.5}\\=\frac{24}{25}\)
10. \(\frac{2}{3} . \frac{3}{6}\\=\frac{2}{3} . \frac{1}{2}\\=\frac{2.1}{3.2}\\=\frac{2}{6}\\=\frac{1}{3}\)
11. \(\frac{7}{11} . \frac{12}{4}\\=\frac{7}{11} . \frac{3}{1}\\=\frac{7.3}{11.1}\\=\frac{21}{11}\)
12. \(\frac{4}{4} . \frac{12}{12}\\=\frac{1}{1} . \frac{1}{1}\\=\frac{1.1}{1.1}\\=\frac{1}{1}= 1\)