Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{10}{7}-\frac{9}{10}\\=\frac{100}{70}-\frac{63}{70}\\=\frac{100-63}{70}\\=\frac{37}{70}\)
2. \(\frac{6}{7}-\frac{3}{10}\\=\frac{60}{70}-\frac{21}{70}\\=\frac{60-21}{70}\\=\frac{39}{70}\)
3. \(\frac{9}{11}-\frac{5}{9}\\=\frac{81}{99}-\frac{55}{99}\\=\frac{81-55}{99}\\=\frac{26}{99}\)
4. \(\frac{9}{8}-\frac{6}{7}\\=\frac{63}{56}-\frac{48}{56}\\=\frac{63-48}{56}\\=\frac{15}{56}\)
5. \(\frac{10}{7}-\frac{6}{5}\\=\frac{50}{35}-\frac{42}{35}\\=\frac{50-42}{35}\\=\frac{8}{35}\)
6. \(\frac{10}{11}-\frac{2}{11}\\=\frac{10-2}{11}\\=\frac{8}{11}\)
7. \(\frac{9}{2}-\frac{4}{7}\\=\frac{63}{14}-\frac{8}{14}\\=\frac{63-8}{14}\\=\frac{55}{14}\)
8. \(\frac{9}{2}-\frac{8}{11}\\=\frac{99}{22}-\frac{16}{22}\\=\frac{99-16}{22}\\=\frac{83}{22}\)
9. \(\frac{9}{2}-\frac{4}{5}\\=\frac{45}{10}-\frac{8}{10}\\=\frac{45-8}{10}\\=\frac{37}{10}\)
10. \(\frac{5}{3}-\frac{8}{11}\\=\frac{55}{33}-\frac{24}{33}\\=\frac{55-24}{33}\\=\frac{31}{33}\)
11. \(\frac{10}{7}-\frac{2}{5}\\=\frac{50}{35}-\frac{14}{35}\\=\frac{50-14}{35}\\=\frac{36}{35}\)
12. \(\frac{8}{7}-\frac{5}{12}\\=\frac{96}{84}-\frac{35}{84}\\=\frac{96-35}{84}\\=\frac{61}{84}\)