Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{7}{5}-\frac{3}{8}\\=\frac{56}{40}-\frac{15}{40}\\=\frac{56-15}{40}\\=\frac{41}{40}\)
2. \(\frac{8}{5}-\frac{9}{8}\\=\frac{64}{40}-\frac{45}{40}\\=\frac{64-45}{40}\\=\frac{19}{40}\)
3. \(\frac{10}{3}-\frac{5}{9}\\=\frac{30}{9}-\frac{5}{9}\\=\frac{30-5}{9}\\=\frac{25}{9}\)
4. \(\frac{4}{3}-\frac{7}{10}\\=\frac{40}{30}-\frac{21}{30}\\=\frac{40-21}{30}\\=\frac{19}{30}\)
5. \(\frac{8}{9}-\frac{5}{9}\\=\frac{8-5}{9}\\=\frac{3}{9}\\=\frac{1}{3}\)
6. \(\frac{9}{8}-\frac{6}{7}\\=\frac{63}{56}-\frac{48}{56}\\=\frac{63-48}{56}\\=\frac{15}{56}\)
7. \(\frac{7}{4}-\frac{3}{11}\\=\frac{77}{44}-\frac{12}{44}\\=\frac{77-12}{44}\\=\frac{65}{44}\)
8. \(\frac{9}{2}-\frac{10}{3}\\=\frac{27}{6}-\frac{20}{6}\\=\frac{27-20}{6}\\=\frac{7}{6}\)
9. \(\frac{5}{3}-\frac{10}{9}\\=\frac{15}{9}-\frac{10}{9}\\=\frac{15-10}{9}\\=\frac{5}{9}\)
10. \(\frac{8}{11}-\frac{4}{7}\\=\frac{56}{77}-\frac{44}{77}\\=\frac{56-44}{77}\\=\frac{12}{77}\)
11. \(\frac{5}{6}-\frac{4}{9}\\=\frac{15}{18}-\frac{8}{18}\\=\frac{15-8}{18}\\=\frac{7}{18}\)
12. \(\frac{8}{11}-\frac{7}{11}\\=\frac{8-7}{11}\\=\frac{1}{11}\)