CHAPTER-9 RATIONAL NUMBERS (SET-1)

Questions in this test

1. A ______ number is any number that can be named in the form a/b where a and b are integers and b=/0
2. Write $\frac{9}{15}$ in standard form?
3. Fill in the blanks: $\frac{-8}{3}=\frac{\square }{12}=\frac{56}{\square }$
4. Add $\frac{7}{8}$ and $\frac{-5}{8}$
5. Add $\frac{7}{-18}+\frac{5}{-12}+-\frac{9}{-16}$
6. Subtract $\frac{7}{8}$ from $\frac{5}{12}$
7. What should be added to $\frac{-7}{12}$ so as to get $\frac{9}{16}?$
8. Multiply $\frac{-8}{19}$ by $(-57)$
9. Simplify - $\left[-\frac{5}{9}\times \frac{72}{-125}\right]-\left[\frac{11}{17}\times \frac{34}{55}\right]+\left[\frac{28}{-13}\times \frac{-52}{21}\right]$
10. By what number should be multiply $\frac{-16}{21},$ So that their product may be $\frac{4}{7}?$