Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{10}{9}-\frac{4}{7}\\=\frac{70}{63}-\frac{36}{63}\\=\frac{70-36}{63}\\=\frac{34}{63}\)
2. \(\frac{5}{8}-\frac{3}{5}\\=\frac{25}{40}-\frac{24}{40}\\=\frac{25-24}{40}\\=\frac{1}{40}\)
3. \(\frac{10}{9}-\frac{7}{11}\\=\frac{110}{99}-\frac{63}{99}\\=\frac{110-63}{99}\\=\frac{47}{99}\)
4. \(\frac{9}{5}-\frac{3}{5}\\=\frac{9-3}{5}\\=\frac{6}{5}\)
5. \(\frac{7}{3}-\frac{6}{5}\\=\frac{35}{15}-\frac{18}{15}\\=\frac{35-18}{15}\\=\frac{17}{15}\)
6. \(\frac{4}{5}-\frac{6}{11}\\=\frac{44}{55}-\frac{30}{55}\\=\frac{44-30}{55}\\=\frac{14}{55}\)
7. \(\frac{6}{11}-\frac{4}{11}\\=\frac{6-4}{11}\\=\frac{2}{11}\)
8. \(\frac{7}{5}-\frac{6}{7}\\=\frac{49}{35}-\frac{30}{35}\\=\frac{49-30}{35}\\=\frac{19}{35}\)
9. \(\frac{7}{5}-\frac{7}{5}\\=\frac{7-7}{5}\\=\frac{0}{5}\\=0\)
10. \(\frac{5}{8}-\frac{6}{11}\\=\frac{55}{88}-\frac{48}{88}\\=\frac{55-48}{88}\\=\frac{7}{88}\)
11. \(\frac{7}{2}-\frac{3}{8}\\=\frac{28}{8}-\frac{3}{8}\\=\frac{28-3}{8}\\=\frac{25}{8}\)
12. \(\frac{10}{3}-\frac{2}{9}\\=\frac{30}{9}-\frac{2}{9}\\=\frac{30-2}{9}\\=\frac{28}{9}\)