1/25 + 43/50 =

1. $\frac{1}{25} + \frac{43}{50} = \frac{2}{50} + \frac{43}{50} = \frac{45}{50} = \frac{9}{10} = 0.9$ 2. $\frac{7}{10} + \frac{5}{6} = \frac{21}{30} + \frac{25}{30} = \frac{46}{30} = \frac{23}{15} = 1\frac{8}{15}$ 3. $\frac{1}{5} - \frac{38}{25} = \frac{5}{25} - \frac{38}{25} = -\frac{33}{25} = -1\frac{8}{25} = -1.32$ 4. $\frac{11}{14} - \frac{5}{21} = \frac{33}{42} - \frac{10}{42} = \frac{23}{42}$ 5. $\frac{16}{9} \cdot \frac{6}{40} = \frac{16}{40} \cdot \frac{6}{9} = \frac{2}{5} \cdot \frac{2}{3} = \frac{4}{15}$ 6. $\frac{5}{6} \cdot \frac{3}{2} = \frac{5 \cdot 3}{6 \cdot 2} = \frac{15}{12} = \frac{5}{4} = 1.25$ 7. $\frac{9}{2} : \frac{15}{7} = \frac{9}{2} \cdot \frac{7}{15} = \frac{3 \cdot 7}{2 \cdot 5} = \frac{21}{10} = 2.1$ 8. $\frac{7}{15} : \frac{8}{33} = \frac{7}{15} \cdot \frac{33}{8} = \frac{7 \cdot 11}{5 \cdot 8} = \frac{77}{40} = 1\frac{37}{40} = 1.925$ 9. $4\frac{4}{7} \cdot 1\frac{3}{4} = \frac{32}{7} \cdot \frac{7}{4} = \frac{32}{4} = 8$ 10. $12 \cdot \frac{5}{14} - \frac{3}{7} = \frac{60}{14} - \frac{6}{14} = \frac{54}{14} = \frac{27}{7} = 3\frac{6}{7}$ 11. $1 - \frac{9}{56} : \frac{3}{8} = 1 - \frac{9}{56} \cdot \frac{8}{3} = 1 - \frac{3}{7} = \frac{4}{7}$ 12. $\frac{3}{35} \cdot (\frac{2}{3} + \frac{1}{6}) = \frac{3}{35} \cdot (\frac{4}{6} + \frac{1}{6}) = \frac{3}{35} \cdot \frac{5}{6} = \frac{1}{7} \cdot \frac{1}{2} = \frac{1}{14}$ 13. $(\frac{1}{13} - 2\frac{3}{4}) \cdot 26 = \frac{1}{13} \cdot 26 - \frac{11}{4} \cdot 26 = 2 - \frac{11 \cdot 13}{2} = 2 - 71.5 = -69.5$ 14. $\frac{15}{20} : 6 + \frac{1}{6} = \frac{3}{4} \cdot \frac{1}{6} + \frac{1}{6} = \frac{1}{8} + \frac{1}{6} = \frac{3}{24} + \frac{4}{24} = \frac{7}{24}$ 15. $\frac{5}{12} - \frac{8}{9} \cdot \frac{7}{32} = \frac{5}{12} - \frac{1}{9} \cdot \frac{7}{4} = \frac{5}{12} - \frac{7}{36} = \frac{15}{36} - \frac{7}{36} = \frac{8}{36} = \frac{2}{9}$ 16. $\frac{4}{9} + \frac{3}{7} : \frac{27}{35} = \frac{4}{9} + \frac{3}{7} \cdot \frac{35}{27} = \frac{4}{9} + \frac{1}{1} \cdot \frac{5}{9} = \frac{9}{9} = 1$