# AB: Rechentabelle für Brüche

1.

In der nachstehenden Tabelle sind Werte für a, b und c eingetragen. Daneben stehen die gesuchten Berechnungen. Berechne entsprechend der Vorgaben und trage die Ergebnisse ein:

Nr. a b c a + b a + c a · b a : c b - c a + b · c
1. $$\frac{1}{2}$$ $$\frac{1}{2}$$ $$\frac{1}{4}$$ $$1$$ $$\frac{3}{4}$$ $$\frac{1}{4}$$ $$2$$ $$\frac{1}{4}$$ $$\frac{5}{8}$$
2. $$\frac{2}{5}$$ $$\frac{3}{5}$$ $$\frac{7}{5}$$ $$1$$ $$\frac{9}{5}$$ $$\frac{6}{25}$$ $$\frac{2}{7}$$ $$-\frac{4}{5}$$ $$\frac{31}{25}$$
3. $$\frac{1}{10}$$ $$\frac{1}{10}$$ $$\frac{2}{10}$$ $$\frac{1}{5}$$ $$\frac{3}{10}$$ $$\frac{1}{100}$$ $$\frac{1}{2}$$ $$-\frac{1}{10}$$ $$\frac{3}{25}$$
4. $$\frac{1}{2}$$ $$\frac{3}{4}$$ $$\frac{1}{4}$$ $$\frac{5}{4}$$ $$\frac{3}{4}$$ $$\frac{3}{8}$$ $$2$$ $$\frac{1}{2}$$ $$\frac{11}{16}$$
5. $$\frac{1}{2}$$ $$\frac{2}{5}$$ $$\frac{1}{10}$$ $$\frac{9}{10}$$ $$\frac{3}{5}$$ $$\frac{1}{5}$$ $$5$$ $$\frac{3}{10}$$ $$\frac{27}{50}$$
6. $$\frac{3}{2}$$ $$\frac{1}{3}$$ $$\frac{1}{6}$$ $$\frac{11}{6}$$ $$\frac{5}{3}$$ $$\frac{1}{2}$$ $$9$$ $$\frac{1}{6}$$ $$\frac{14}{9}$$
7. $$\frac{5}{2}$$ $$\frac{1}{5}$$ $$\frac{1}{10}$$ $$\frac{27}{10}$$ $$\frac{13}{5}$$ $$\frac{1}{2}$$ $$25$$ $$\frac{1}{10}$$ $$\frac{63}{25}$$
8. $$\frac{1}{6}$$ $$\frac{1}{12}$$ $$\frac{1}{18}$$ $$\frac{1}{4}$$ $$\frac{2}{9}$$ $$\frac{1}{72}$$ $$3$$ $$\frac{1}{36}$$ $$\frac{37}{216}$$
9. $$\frac{1}{20}$$ $$\frac{1}{5}$$ $$\frac{1}{10}$$ $$\frac{1}{4}$$ $$\frac{3}{20}$$ $$\frac{1}{100}$$ $$\frac{1}{2}$$ $$\frac{1}{10}$$ $$\frac{7}{100}$$
10. $$\frac{1}{20}$$ $$\frac{2}{30}$$ $$\frac{3}{40}$$ $$\frac{7}{60}$$ $$\frac{1}{8}$$ $$\frac{1}{300}$$ $$\frac{2}{3}$$ $$-\frac{1}{120}$$ $$\frac{11}{200}$$
11. $$\frac{1}{30}$$ $$\frac{1}{60}$$ $$\frac{1}{3}$$ $$\frac{1}{20}$$ $$\frac{11}{30}$$ $$\frac{1}{1800}$$ $$\frac{1}{10}$$ $$-\frac{19}{60}$$ $$\frac{7}{180}$$
12. $$\frac{1}{3}$$ $$\frac{1}{6}$$ $$2$$ $$\frac{1}{2}$$ $$\frac{7}{3}$$ $$\frac{1}{18}$$ $$\frac{1}{6}$$ $$-\frac{11}{6}$$ $$\frac{2}{3}$$
13. $$\frac{3}{10}$$ $$\frac{3}{15}$$ $$3$$ $$\frac{1}{2}$$ $$\frac{33}{10}$$ $$\frac{3}{50}$$ $$\frac{1}{10}$$ $$-\frac{14}{5}$$ $$\frac{9}{10}$$
14. $$\frac{1}{2}$$ $$7$$ $$\frac{1}{7}$$ $$\frac{15}{2}$$ $$\frac{9}{14}$$ $$\frac{7}{2}$$ $$\frac{7}{2}$$ $$\frac{48}{7}$$ $$\frac{3}{2}$$
15. $$\frac{9}{10}$$ $$10$$ $$\frac{1}{20}$$ $$\frac{109}{10}$$ $$\frac{19}{20}$$ $$9$$ $$18$$ $$\frac{199}{20}$$ $$\frac{7}{5}$$

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