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1. $$\frac{8}{11} \times \frac{5}{6} = \frac{8 \times 5}{11 \times 6} = \frac{40}{66} = \frac{20}{33}$$ 2. $$\frac{2}{2} \times \frac{5}{6} = 1 \times \frac{5}{6} = \frac{5}{6}$$ 3. $$\frac{3}{4} \times \frac{4}{5} = \frac{3 \times 4}{4 \times 5} = \frac{12}{20} = \frac{3}{5}$$ 4. $$\frac{3}{5} \times \frac{1}{8} = \frac{3 \times 1}{5 \times 8} = \frac{3}{40}$$ 5. $$\frac{1}{9} \times \frac{6}{8} = \frac{1 \times 6}{9 \times 8} = \frac{6}{72} = \frac{1}{12}$$ 6. $$\frac{5}{9} \times \frac{1}{8} = \frac{5 \times 1}{9 \times 8} = \frac{5}{72}$$ 7. $$\frac{1}{5} \times \frac{3}{4} = \frac{1 \times 3}{5 \times 4} = \frac{3}{20}$$ 8. $$\frac{8}{10} \times \frac{7}{12} = \frac{8 \times 7}{10 \times 12} = \frac{56}{120} = \frac{7}{15}$$ 9. $$\frac{9}{9} \times \frac{3}{6} = 1 \times \frac{3}{6} = \frac{3}{6} = \frac{1}{2}$$ 10. $$\frac{3}{4} \times \frac{3}{5} = \frac{3 \times 3}{4 \times 5} = \frac{9}{20}$$ 11. $$\frac{1}{5} \times \frac{3}{4} = \frac{1 \times 3}{5 \times 4} = \frac{3}{20}$$ 12. $$\frac{3}{4} \times \frac{2}{4} = \frac{3 \times 2}{4 \times 4} = \frac{6}{16} = \frac{3}{8}$$ 13. $$\frac{10}{10} \times \frac{2}{2} = 1 \times 1 = 1$$ 14. $$\frac{2}{5} \times \frac{5}{5} = \frac{2}{5} \times 1 = \frac{2}{5}$$ 15. $$\frac{9}{10} \times \frac{6}{8} = \frac{9 \times 6}{10 \times 8} = \frac{54}{80} = \frac{27}{40}$$ 16. $$\frac{1}{12} \times \frac{2}{8} = \frac{1 \times 2}{12 \times 8} = \frac{2}{96} = \frac{1}{48}$$ 17. $$\frac{4}{10} \times \frac{7}{10} = \frac{4 \times 7}{10 \times 10} = \frac{28}{100} = \frac{7}{25}$$ 18. $$\frac{2}{2} \times \frac{2}{6} = 1 \times \frac{2}{6} = \frac{2}{6} = \frac{1}{3}$$ 19. $$\frac{2}{6} \times \frac{2}{2} = \frac{2}{6} \times 1 = \frac{2}{6} = \frac{1}{3}$$ 20. $$\frac{6}{10} \times \frac{1}{3} = \frac{6 \times 1}{10 \times 3} = \frac{6}{30} = \frac{1}{5}$$