Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{8}{9}-\frac{2}{9}\\=\frac{8-2}{9}\\=\frac{6}{9}\\=\frac{2}{3}\)
2. \(\frac{4}{3}-\frac{5}{11}\\=\frac{44}{33}-\frac{15}{33}\\=\frac{44-15}{33}\\=\frac{29}{33}\)
3. \(\frac{9}{8}-\frac{3}{7}\\=\frac{63}{56}-\frac{24}{56}\\=\frac{63-24}{56}\\=\frac{39}{56}\)
4. \(\frac{8}{3}-\frac{5}{6}\\=\frac{16}{6}-\frac{5}{6}\\=\frac{16-5}{6}\\=\frac{11}{6}\)
5. \(\frac{4}{9}-\frac{3}{7}\\=\frac{28}{63}-\frac{27}{63}\\=\frac{28-27}{63}\\=\frac{1}{63}\)
6. \(\frac{7}{2}-\frac{3}{8}\\=\frac{28}{8}-\frac{3}{8}\\=\frac{28-3}{8}\\=\frac{25}{8}\)
7. \(\frac{10}{11}-\frac{7}{9}\\=\frac{90}{99}-\frac{77}{99}\\=\frac{90-77}{99}\\=\frac{13}{99}\)
8. \(\frac{10}{3}-\frac{8}{11}\\=\frac{110}{33}-\frac{24}{33}\\=\frac{110-24}{33}\\=\frac{86}{33}\)
9. \(\frac{9}{2}-\frac{8}{3}\\=\frac{27}{6}-\frac{16}{6}\\=\frac{27-16}{6}\\=\frac{11}{6}\)
10. \(\frac{6}{7}-\frac{3}{4}\\=\frac{24}{28}-\frac{21}{28}\\=\frac{24-21}{28}\\=\frac{3}{28}\)
11. \(\frac{7}{3}-\frac{5}{4}\\=\frac{28}{12}-\frac{15}{12}\\=\frac{28-15}{12}\\=\frac{13}{12}\)
12. \(\frac{8}{9}-\frac{5}{8}\\=\frac{64}{72}-\frac{45}{72}\\=\frac{64-45}{72}\\=\frac{19}{72}\)