Math worksheet for practicing operations with rational numbers, including addition, subtraction, multiplication, and division of fractions.

Final Answer:
1) $\frac{2}{3} + \frac{7}{2} = \frac{4 + 21}{6} = \frac{25}{6}$
2) $-\frac{4}{5} + \frac{7}{10} = \frac{-8 + 7}{10} = \frac{-1}{10}$
3) $\frac{6}{5} - 5 = \frac{6 - 25}{5} = \frac{-19}{5}$
4) $-\frac{7}{4} - \frac{3}{2} = \frac{-7 - 6}{4} = \frac{-13}{4}$
5) $\frac{2}{3} \cdot \left(-\frac{7}{4}\right) = \frac{-14}{12} = \frac{-7}{6}$
6) $-4 \cdot \left(-\frac{3}{2}\right) = \frac{12}{2} = 6$
7) $-\frac{3}{4} \div \frac{2}{5} = -\frac{3}{4} \cdot \frac{5}{2} = \frac{-15}{8}$