Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{8}{3}-\frac{2}{9}\\=\frac{24}{9}-\frac{2}{9}\\=\frac{24-2}{9}\\=\frac{22}{9}\)
2. \(\frac{10}{3}-\frac{7}{10}\\=\frac{100}{30}-\frac{21}{30}\\=\frac{100-21}{30}\\=\frac{79}{30}\)
3. \(\frac{3}{4}-\frac{5}{8}\\=\frac{6}{8}-\frac{5}{8}\\=\frac{6-5}{8}\\=\frac{1}{8}\)
4. \(\frac{5}{4}-\frac{4}{5}\\=\frac{25}{20}-\frac{16}{20}\\=\frac{25-16}{20}\\=\frac{9}{20}\)
5. \(\frac{7}{12}-\frac{4}{7}\\=\frac{49}{84}-\frac{48}{84}\\=\frac{49-48}{84}\\=\frac{1}{84}\)
6. \(\frac{9}{11}-\frac{4}{11}\\=\frac{9-4}{11}\\=\frac{5}{11}\)
7. \(\frac{4}{5}-\frac{3}{8}\\=\frac{32}{40}-\frac{15}{40}\\=\frac{32-15}{40}\\=\frac{17}{40}\)
8. \(\frac{6}{5}-\frac{7}{8}\\=\frac{48}{40}-\frac{35}{40}\\=\frac{48-35}{40}\\=\frac{13}{40}\)
9. \(\frac{10}{3}-\frac{10}{9}\\=\frac{30}{9}-\frac{10}{9}\\=\frac{30-10}{9}\\=\frac{20}{9}\)
10. \(\frac{10}{9}-\frac{7}{10}\\=\frac{100}{90}-\frac{63}{90}\\=\frac{100-63}{90}\\=\frac{37}{90}\)
11. \(\frac{9}{2}-\frac{5}{9}\\=\frac{81}{18}-\frac{10}{18}\\=\frac{81-10}{18}\\=\frac{71}{18}\)
12. \(\frac{8}{7}-\frac{8}{11}\\=\frac{88}{77}-\frac{56}{77}\\=\frac{88-56}{77}\\=\frac{32}{77}\)