Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

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

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{12}{11} . \frac{9}{4}\\=\frac{12.9}{11.4}\\=\frac{108}{44}\\=\frac{27}{11}\)
2. \(\frac{5}{2} . \frac{6}{2}\\=\frac{5}{2} . \frac{3}{1}\\=\frac{5.3}{2.1}\\=\frac{15}{2}\)
3. \(\frac{8}{5} . \frac{11}{2}\\=\frac{8.11}{5.2}\\=\frac{88}{10}\\=\frac{44}{5}\)
4. \(\frac{10}{5} . \frac{5}{4}\\=\frac{2}{1} . \frac{5}{4}\\=\frac{2.5}{1.4}\\=\frac{10}{4}\\=\frac{5}{2}\)
5. \(\frac{11}{7} . \frac{10}{10}\\=\frac{11}{7} . \frac{1}{1}\\=\frac{11.1}{7.1}\\=\frac{11}{7}\)
6. \(\frac{8}{2} . \frac{3}{7}\\=\frac{4}{1} . \frac{3}{7}\\=\frac{4.3}{1.7}\\=\frac{12}{7}\)
7. \(\frac{10}{2} . \frac{12}{7}\\=\frac{5}{1} . \frac{12}{7}\\=\frac{5.12}{1.7}\\=\frac{60}{7}\)
8. \(\frac{12}{3} . \frac{12}{4}\\=\frac{4}{1} . \frac{3}{1}\\=\frac{4.3}{1.1}\\=\frac{12}{1}= 12\)
9. \(\frac{7}{6} . \frac{5}{5}\\=\frac{7}{6} . \frac{1}{1}\\=\frac{7.1}{6.1}\\=\frac{7}{6}\)
10. \(\frac{12}{5} . \frac{12}{9}\\=\frac{12}{5} . \frac{4}{3}\\=\frac{12.4}{5.3}\\=\frac{48}{15}\\=\frac{16}{5}\)
11. \(\frac{8}{10} . \frac{6}{12}\\=\frac{4}{5} . \frac{1}{2}\\=\frac{4.1}{5.2}\\=\frac{4}{10}\\=\frac{2}{5}\)
12. \(\frac{3}{2} . \frac{10}{7}\\=\frac{3.10}{2.7}\\=\frac{30}{14}\\=\frac{15}{7}\)