91Ó°ÊÓ

Write each fraction. (Note to students: In case you know how to simplify fractions, none of the fractions in this section are simplified.) See Example 9. There are 31 days in the month of March. What fraction of the month do 11 days represent? $$ \begin{array}{|c|c|c|c|c|c|c|} \hline \text { Mon. } & \text { Tue. } & \text { Wed. } & \text { Thu. } & \text { Fri. } & \text { Sat. } & \text { Sun. } \\ \hline & & & & & 1 & 2 \\ \hline 3 & 4 & 5 & 6 & 7 & 8 & 9 \\ \hline 10 & 11 & 12 & 13 & 14 & 15 & 16 \\ \hline 17 & 18 & 19 & 20 & 21 & 22 & 23 \\ \hline 24 & 25 & 26 & 27 & 28 & 29 & 30 \\ \hline 31 & & & & & & \\ \hline \end{array} $$

Write each fraction in simplest form. \(\frac{40 x y}{64 x y z}\)

Add or subtract as indicated. $$ \frac{3 x}{10}+\frac{x}{6} $$

Simplify the following. $$\left(-\frac{1}{2}\right)^{2}+\frac{1}{5}$$

Perform each indicated operation. See Examples 1 through 15. $$ \frac{16}{27 y} \div \frac{8}{15 y} $$

Write each fraction in simplest form. \(\frac{28 a b c}{60 a c}\)

Write each fraction. (Note to students: In case you know how to simplify fractions, none of the fractions in this section are simplified.) See Example 9. There are 60 minutes in an hour. What fraction of an hour do 37 minutes represent?

Subtract. $$ \begin{array}{r} 12 \frac{5}{12} \\ -\quad 4 \frac{1}{6} \\ \hline \end{array} $$

Simplify the following. $$\left(-\frac{3}{4}\right)^{2}+\frac{3}{8}$$

$$ \frac{5 z}{13}+\frac{3}{26} $$