1. Convert the repeating decimal $0.\overline{5}$ to a fraction in simplest form. The fraction is ___.
2. To convert $x = 0.\overline{18}$ to a fraction, what is the resulting equation after multiplying by the correct power of 10 and subtracting the original equation?
3. Express the repeating decimal $0.\overline{54}$ as a fraction in its simplest form. The fraction is ___.
4. Convert the decimal $0.4\overline{8}$ to a fraction in simplest form. The fraction is ___.
5. To convert the decimal $0.12\overline{3}$ to a fraction, which two equations should you subtract to eliminate the repeating part?
6. The irrational number $\sqrt{85}$ lies between which two consecutive integers?
7. Given that $7.0^2 = 49$ and $7.1^2 = 50.41$, what is the best approximation of $\sqrt{50}$ to one decimal place? ___
8. Which inequality correctly compares the numbers $\sqrt{15}$ and $3.8$?
9. A square garden has an area of 800 square meters. Which of the following is the best approximation for the length of one side of the garden?
10. Approximations for $\sqrt{40}$ are tested. It is known that $6.3^2 = 39.69$ and $6.4^2 = 40.96$. The better approximation is ___.