Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{5}{9}-\frac{2}{11}\\=\frac{55}{99}-\frac{18}{99}\\=\frac{55-18}{99}\\=\frac{37}{99}\)
2. \(\frac{6}{5}-\frac{6}{11}\\=\frac{66}{55}-\frac{30}{55}\\=\frac{66-30}{55}\\=\frac{36}{55}\)
3. \(\frac{3}{4}-\frac{2}{3}\\=\frac{9}{12}-\frac{8}{12}\\=\frac{9-8}{12}\\=\frac{1}{12}\)
4. \(\frac{7}{8}-\frac{3}{7}\\=\frac{49}{56}-\frac{24}{56}\\=\frac{49-24}{56}\\=\frac{25}{56}\)
5. \(\frac{9}{4}-\frac{2}{5}\\=\frac{45}{20}-\frac{8}{20}\\=\frac{45-8}{20}\\=\frac{37}{20}\)
6. \(\frac{3}{4}-\frac{5}{8}\\=\frac{6}{8}-\frac{5}{8}\\=\frac{6-5}{8}\\=\frac{1}{8}\)
7. \(\frac{8}{5}-\frac{4}{5}\\=\frac{8-4}{5}\\=\frac{4}{5}\)
8. \(\frac{5}{3}-\frac{4}{11}\\=\frac{55}{33}-\frac{12}{33}\\=\frac{55-12}{33}\\=\frac{43}{33}\)
9. \(\frac{9}{5}-\frac{7}{10}\\=\frac{18}{10}-\frac{7}{10}\\=\frac{18-7}{10}\\=\frac{11}{10}\)
10. \(\frac{8}{7}-\frac{9}{11}\\=\frac{88}{77}-\frac{63}{77}\\=\frac{88-63}{77}\\=\frac{25}{77}\)
11. \(\frac{7}{3}-\frac{5}{7}\\=\frac{49}{21}-\frac{15}{21}\\=\frac{49-15}{21}\\=\frac{34}{21}\)
12. \(\frac{7}{2}-\frac{6}{11}\\=\frac{77}{22}-\frac{12}{22}\\=\frac{77-12}{22}\\=\frac{65}{22}\)