Breuken verm. (reeks 1)

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Vermenigvuldig de breuken

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

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Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{9}{10} . \frac{5}{11}\\=\frac{9.5}{10.11}\\=\frac{45}{110}\\=\frac{9}{22}\)
2. \(\frac{3}{7} . \frac{10}{4}\\=\frac{3}{7} . \frac{5}{2}\\=\frac{3.5}{7.2}\\=\frac{15}{14}\)
3. \(\frac{7}{4} . \frac{4}{3}\\=\frac{7.4}{4.3}\\=\frac{28}{12}\\=\frac{7}{3}\)
4. \(\frac{6}{6} . \frac{9}{3}\\=\frac{1}{1} . \frac{3}{1}\\=\frac{1.3}{1.1}\\=\frac{3}{1}= 3\)
5. \(\frac{3}{4} . \frac{9}{3}\\=\frac{3}{4} . \frac{3}{1}\\=\frac{3.3}{4.1}\\=\frac{9}{4}\)
6. \(\frac{11}{3} . \frac{5}{11}\\=\frac{11.5}{3.11}\\=\frac{55}{33}\\=\frac{5}{3}\)
7. \(\frac{3}{8} . \frac{3}{12}\\=\frac{3}{8} . \frac{1}{4}\\=\frac{3.1}{8.4}\\=\frac{3}{32}\)
8. \(\frac{4}{5} . \frac{4}{4}\\=\frac{4}{5} . \frac{1}{1}\\=\frac{4.1}{5.1}\\=\frac{4}{5}\)
9. \(\frac{12}{8} . \frac{11}{11}\\=\frac{3}{2} . \frac{1}{1}\\=\frac{3.1}{2.1}\\=\frac{3}{2}\)
10. \(\frac{11}{11} . \frac{10}{7}\\=\frac{1}{1} . \frac{10}{7}\\=\frac{1.10}{1.7}\\=\frac{10}{7}\)
11. \(\frac{6}{7} . \frac{2}{10}\\=\frac{6}{7} . \frac{1}{5}\\=\frac{6.1}{7.5}\\=\frac{6}{35}\)
12. \(\frac{11}{11} . \frac{6}{8}\\=\frac{1}{1} . \frac{3}{4}\\=\frac{1.3}{1.4}\\=\frac{3}{4}\)