1. Convert the repeating decimal $0.\overline{7}$ to a fraction in simplest form. The fraction is ___.
2. Which fraction is equivalent to the repeating decimal $0.\overline{15}$?
3. To convert the repeating decimal $0.\overline{456}$ to a fraction using the standard method, by which number should you multiply the equation $x = 0.\overline{456}$?
4. When $0.\overline{123}$ is converted to a fraction and simplified, the resulting fraction is ___.
5. Write the repeating decimal $0.\overline{34}$ as a fraction. The answer is ___.
6. Express the repeating decimal $0.4\overline{5}$ as a fraction in simplest form. The resulting fraction is ___.
7. To convert $x = 0.1\overline{7}$ to a fraction, which pair of equations should be subtracted to eliminate the repeating part?
8. Which fraction is equivalent to the repeating decimal $0.2\overline{6}$?
9. When the repeating decimal $0.12\overline{3}$ is written as a fraction in simplest form, the denominator is ___.
10. Let $x = 0.3\overline{1}$. When you subtract $10x$ from $100x$ to remove the repeating decimal, the result is $90x = k$. What is the value of $k$? ___