Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

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

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{11}{10} . \frac{12}{7}\\=\frac{11.12}{10.7}\\=\frac{132}{70}\\=\frac{66}{35}\)
2. \(\frac{6}{2} . \frac{4}{7}\\=\frac{3}{1} . \frac{4}{7}\\=\frac{3.4}{1.7}\\=\frac{12}{7}\)
3. \(\frac{6}{10} . \frac{9}{12}\\=\frac{3}{5} . \frac{3}{4}\\=\frac{3.3}{5.4}\\=\frac{9}{20}\)
4. \(\frac{3}{7} . \frac{2}{2}\\=\frac{3}{7} . \frac{1}{1}\\=\frac{3.1}{7.1}\\=\frac{3}{7}\)
5. \(\frac{8}{11} . \frac{2}{4}\\=\frac{8}{11} . \frac{1}{2}\\=\frac{8.1}{11.2}\\=\frac{8}{22}\\=\frac{4}{11}\)
6. \(\frac{11}{2} . \frac{4}{11}\\=\frac{11.4}{2.11}\\=\frac{44}{22}\\=\frac{2}{1}= 2\)
7. \(\frac{8}{3} . \frac{10}{5}\\=\frac{8}{3} . \frac{2}{1}\\=\frac{8.2}{3.1}\\=\frac{16}{3}\)
8. \(\frac{8}{2} . \frac{9}{10}\\=\frac{4}{1} . \frac{9}{10}\\=\frac{4.9}{1.10}\\=\frac{36}{10}\\=\frac{18}{5}\)
9. \(\frac{10}{7} . \frac{8}{9}\\=\frac{10.8}{7.9}\\=\frac{80}{63}\)
10. \(\frac{10}{4} . \frac{8}{8}\\=\frac{5}{2} . \frac{1}{1}\\=\frac{5.1}{2.1}\\=\frac{5}{2}\)
11. \(\frac{4}{12} . \frac{12}{5}\\=\frac{1}{3} . \frac{12}{5}\\=\frac{1.12}{3.5}\\=\frac{12}{15}\\=\frac{4}{5}\)
12. \(\frac{12}{8} . \frac{8}{7}\\=\frac{3}{2} . \frac{8}{7}\\=\frac{3.8}{2.7}\\=\frac{24}{14}\\=\frac{12}{7}\)