Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{9}{10}-\frac{8}{11}\\=\frac{99}{110}-\frac{80}{110}\\=\frac{99-80}{110}\\=\frac{19}{110}\)
2. \(\frac{8}{3}-\frac{9}{10}\\=\frac{80}{30}-\frac{27}{30}\\=\frac{80-27}{30}\\=\frac{53}{30}\)
3. \(\frac{7}{2}-\frac{10}{3}\\=\frac{21}{6}-\frac{20}{6}\\=\frac{21-20}{6}\\=\frac{1}{6}\)
4. \(\frac{8}{9}-\frac{6}{11}\\=\frac{88}{99}-\frac{54}{99}\\=\frac{88-54}{99}\\=\frac{34}{99}\)
5. \(\frac{10}{7}-\frac{9}{7}\\=\frac{10-9}{7}\\=\frac{1}{7}\)
6. \(\frac{4}{3}-\frac{3}{11}\\=\frac{44}{33}-\frac{9}{33}\\=\frac{44-9}{33}\\=\frac{35}{33}\)
7. \(\frac{5}{4}-\frac{6}{5}\\=\frac{25}{20}-\frac{24}{20}\\=\frac{25-24}{20}\\=\frac{1}{20}\)
8. \(\frac{3}{2}-\frac{10}{7}\\=\frac{21}{14}-\frac{20}{14}\\=\frac{21-20}{14}\\=\frac{1}{14}\)
9. \(\frac{8}{3}-\frac{9}{11}\\=\frac{88}{33}-\frac{27}{33}\\=\frac{88-27}{33}\\=\frac{61}{33}\)
10. \(\frac{5}{6}-\frac{3}{10}\\=\frac{25}{30}-\frac{9}{30}\\=\frac{25-9}{30}\\=\frac{16}{30}\\=\frac{8}{15}\)
11. \(\frac{9}{2}-\frac{5}{11}\\=\frac{99}{22}-\frac{10}{22}\\=\frac{99-10}{22}\\=\frac{89}{22}\)
12. \(\frac{9}{8}-\frac{10}{9}\\=\frac{81}{72}-\frac{80}{72}\\=\frac{81-80}{72}\\=\frac{1}{72}\)