Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{8}{7}-\frac{7}{10}\\=\frac{80}{70}-\frac{49}{70}\\=\frac{80-49}{70}\\=\frac{31}{70}\)
2. \(\frac{4}{3}-\frac{4}{11}\\=\frac{44}{33}-\frac{12}{33}\\=\frac{44-12}{33}\\=\frac{32}{33}\)
3. \(\frac{3}{2}-\frac{4}{3}\\=\frac{9}{6}-\frac{8}{6}\\=\frac{9-8}{6}\\=\frac{1}{6}\)
4. \(\frac{9}{10}-\frac{4}{9}\\=\frac{81}{90}-\frac{40}{90}\\=\frac{81-40}{90}\\=\frac{41}{90}\)
5. \(\frac{9}{5}-\frac{8}{7}\\=\frac{63}{35}-\frac{40}{35}\\=\frac{63-40}{35}\\=\frac{23}{35}\)
6. \(\frac{8}{5}-\frac{9}{10}\\=\frac{16}{10}-\frac{9}{10}\\=\frac{16-9}{10}\\=\frac{7}{10}\)
7. \(\frac{5}{3}-\frac{6}{11}\\=\frac{55}{33}-\frac{18}{33}\\=\frac{55-18}{33}\\=\frac{37}{33}\)
8. \(\frac{5}{2}-\frac{4}{7}\\=\frac{35}{14}-\frac{8}{14}\\=\frac{35-8}{14}\\=\frac{27}{14}\)
9. \(\frac{9}{7}-\frac{4}{7}\\=\frac{9-4}{7}\\=\frac{5}{7}\)
10. \(\frac{5}{3}-\frac{2}{7}\\=\frac{35}{21}-\frac{6}{21}\\=\frac{35-6}{21}\\=\frac{29}{21}\)
11. \(\frac{4}{3}-\frac{5}{4}\\=\frac{16}{12}-\frac{15}{12}\\=\frac{16-15}{12}\\=\frac{1}{12}\)
12. \(\frac{9}{2}-\frac{4}{5}\\=\frac{45}{10}-\frac{8}{10}\\=\frac{45-8}{10}\\=\frac{37}{10}\)