1. Section 5.4 Multiplying and Dividing Fractions
Algebra Concepts
Section 5.4
Multiplying and Dividing Fractions

2. Some people think multiplying and dividing fractions are easier than adding and subtracting because you don’t need a common denominator!!!

3. Multiplying fractions
The simple rule is

4. You can reduce before you multiply- any numerator with any denominator!
5 6 × 9 20

5. Change mixed numbers to improper fractions and you’re ready to go!

6. Multiply and Simplify
# ×3 1 5 # × #3 − 6 5 ×2 1 3

7. Think about this!
I have 2 pounds of candy and I’m dividing it into ½ pound bags? How many bags will there be?

8. Reciprocal of a fraction- when you exchange the numerator and denominator of a fraction.

9. Multiplicative inverses (also called reciprocals)- two numbers whose product is 1

10. Flip the fraction and you have the reciprocal

11. Dividing fractions 1st Fraction is a keeper
Change the division sign to multiply
Flip the second fraction.

12. You already know how to multiply!!
Find each quotient.
# ÷ 2𝑤 3
# ÷ 1 8
# ÷ 2 15

13. Don’t let this scare you!

14. Use order of operations!
− 5 7