Algebraic Fractions Quick Check

Express your answer in simplest form.

 $13\ \frac{3}{8}+\left(-2\ \frac{15}{16}\right)$  = ?

 $\frac{2n}{5}+\frac{n}{3}$  

Express your answer in simplest form.

 $-\frac{4}{n}-\frac{5}{9n}$  = ?

Express your answer in simplest form.

 $\frac{-7}{18n}+\frac{8}{27n}$  = ?

Express your answer in simplest form.

 $-\frac{11}{24}+14\frac{1}{8}$  = ?

 $\frac{2n}{15}\times\frac{3}{6n}$  

 $\frac{-20}{3n}\div\frac{15}{9n}$  

Express your answer in simplest form.

 $\frac{n}{4}-\frac{5n}{8}$  = ?

When do you need a common denominator?

Make sure to read all of the choices.

• a). to compare fractions

• b) to multiply and divide fractions

• c) to add and subtract fractions

• d). all of the above

• e). for a and c only

When must you convert mixed numbers to improper fractions?

Please consider all choices.

• to compare

• to add or subtract

• to multiply or divide

• all of the above