Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

---

Trek de breuken af

Verbetersleutel

1. \(\frac{8}{7}-\frac{6}{11}\\=\frac{88}{77}-\frac{42}{77}\\=\frac{88-42}{77}\\=\frac{46}{77}\)
2. \(\frac{10}{9}-\frac{2}{3}\\=\frac{10-2}{9}\\=\frac{8}{9}\)
3. \(\frac{7}{2}-\frac{2}{9}\\=\frac{63}{18}-\frac{4}{18}\\=\frac{63-4}{18}\\=\frac{59}{18}\)
4. \(\frac{10}{3}-\frac{5}{7}\\=\frac{70}{21}-\frac{15}{21}\\=\frac{70-15}{21}\\=\frac{55}{21}\)
5. \(\frac{8}{11}-\frac{7}{11}\\=\frac{8-7}{11}\\=\frac{1}{11}\)
6. \(\frac{8}{11}-\frac{4}{11}\\=\frac{8-4}{11}\\=\frac{4}{11}\)
7. \(\frac{9}{4}-\frac{2}{9}\\=\frac{81}{36}-\frac{8}{36}\\=\frac{81-8}{36}\\=\frac{73}{36}\)
8. \(\frac{5}{2}-\frac{8}{9}\\=\frac{45}{18}-\frac{16}{18}\\=\frac{45-16}{18}\\=\frac{29}{18}\)
9. \(\frac{4}{5}-\frac{3}{10}\\=\frac{8}{10}-\frac{3}{10}\\=\frac{8-3}{10}\\=\frac{5}{10}\\=\frac{1}{2}\)
10. \(\frac{9}{2}-\frac{3}{2}\\=\frac{9-3}{2}\\=\frac{6}{2}\\=3\)
11. \(\frac{7}{5}-\frac{9}{10}\\=\frac{14}{10}-\frac{9}{10}\\=\frac{14-9}{10}\\=\frac{5}{10}\\=\frac{1}{2}\)
12. \(\frac{2}{3}-\frac{2}{5}\\=\frac{10}{15}-\frac{6}{15}\\=\frac{10-6}{15}\\=\frac{4}{15}\)