• ### To Do Lessons

Mathematics » Mathematics 104: Fractions » Multiply and Divide Mixed Numbers and Complex Fractions

# Key Concepts

This is a lesson from the tutorial, Mathematics 104: Fractions and we encourage you to log in or register before you continue, so that you can track your progress.

## Key Concepts

• Multiply or divide mixed numbers.
1. Convert the mixed numbers to improper fractions.
2. Follow the rules for fraction multiplication or division.
3. Simplify if possible.
• Simplify a complex fraction.
1. Rewrite the complex fraction as a division problem.
2. Follow the rules for dividing fractions.
3. Simplify if possible.
• For any positive numbers $$a$$ and $$b$$, $$\frac{-a}{b}=\frac{a}{-b}=-\frac{a}{b}$$.
• Simplify an expression with a fraction bar.
1. Simplify the numerator.
2. Simplify the denominator.
3. Simplify the fraction.

## Glossary

### complex fraction

A complex fraction is a fraction in which the numerator or the denominator contains a fraction.