Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{8}{7}-\frac{7}{8}\\=\frac{64}{56}-\frac{49}{56}\\=\frac{64-49}{56}\\=\frac{15}{56}\)
2. \(\frac{6}{5}-\frac{3}{4}\\=\frac{24}{20}-\frac{15}{20}\\=\frac{24-15}{20}\\=\frac{9}{20}\)
3. \(\frac{10}{3}-\frac{10}{9}\\=\frac{30}{9}-\frac{10}{9}\\=\frac{30-10}{9}\\=\frac{20}{9}\)
4. \(\frac{3}{2}-\frac{6}{5}\\=\frac{15}{10}-\frac{12}{10}\\=\frac{15-12}{10}\\=\frac{3}{10}\)
5. \(\frac{8}{3}-\frac{8}{3}\\=\frac{8-8}{3}\\=\frac{0}{3}\\=0\)
6. \(\frac{3}{8}-\frac{2}{9}\\=\frac{27}{72}-\frac{16}{72}\\=\frac{27-16}{72}\\=\frac{11}{72}\)
7. \(\frac{6}{5}-\frac{2}{3}\\=\frac{18}{15}-\frac{10}{15}\\=\frac{18-10}{15}\\=\frac{8}{15}\)
8. \(\frac{9}{4}-\frac{7}{8}\\=\frac{18}{8}-\frac{7}{8}\\=\frac{18-7}{8}\\=\frac{11}{8}\)
9. \(\frac{8}{5}-\frac{4}{11}\\=\frac{88}{55}-\frac{20}{55}\\=\frac{88-20}{55}\\=\frac{68}{55}\)
10. \(\frac{10}{11}-\frac{3}{10}\\=\frac{100}{110}-\frac{33}{110}\\=\frac{100-33}{110}\\=\frac{67}{110}\)
11. \(\frac{7}{4}-\frac{2}{9}\\=\frac{63}{36}-\frac{8}{36}\\=\frac{63-8}{36}\\=\frac{55}{36}\)
12. \(\frac{9}{4}-\frac{2}{3}\\=\frac{27}{12}-\frac{8}{12}\\=\frac{27-8}{12}\\=\frac{19}{12}\)