Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{9}{11}-\frac{5}{11}\\=\frac{9-5}{11}\\=\frac{4}{11}\)
2. \(\frac{4}{5}-\frac{3}{4}\\=\frac{16}{20}-\frac{15}{20}\\=\frac{16-15}{20}\\=\frac{1}{20}\)
3. \(\frac{8}{7}-\frac{5}{8}\\=\frac{64}{56}-\frac{35}{56}\\=\frac{64-35}{56}\\=\frac{29}{56}\)
4. \(\frac{5}{2}-\frac{4}{9}\\=\frac{45}{18}-\frac{8}{18}\\=\frac{45-8}{18}\\=\frac{37}{18}\)
5. \(\frac{6}{7}-\frac{8}{11}\\=\frac{66}{77}-\frac{56}{77}\\=\frac{66-56}{77}\\=\frac{10}{77}\)
6. \(\frac{10}{7}-\frac{3}{8}\\=\frac{80}{56}-\frac{21}{56}\\=\frac{80-21}{56}\\=\frac{59}{56}\)
7. \(\frac{2}{5}-\frac{2}{11}\\=\frac{22}{55}-\frac{10}{55}\\=\frac{22-10}{55}\\=\frac{12}{55}\)
8. \(\frac{10}{9}-\frac{5}{7}\\=\frac{70}{63}-\frac{45}{63}\\=\frac{70-45}{63}\\=\frac{25}{63}\)
9. \(\frac{10}{3}-\frac{2}{7}\\=\frac{70}{21}-\frac{6}{21}\\=\frac{70-6}{21}\\=\frac{64}{21}\)
10. \(\frac{9}{2}-\frac{7}{10}\\=\frac{45}{10}-\frac{7}{10}\\=\frac{45-7}{10}\\=\frac{38}{10}\\=\frac{19}{5}\)
11. \(\frac{9}{5}-\frac{7}{12}\\=\frac{108}{60}-\frac{35}{60}\\=\frac{108-35}{60}\\=\frac{73}{60}\)
12. \(\frac{10}{9}-\frac{4}{11}\\=\frac{110}{99}-\frac{36}{99}\\=\frac{110-36}{99}\\=\frac{74}{99}\)