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Transparency 2

2. Splash Screen

3. Objective
Multiply fractions
Example 2-4b

4. Greatest common factor
Review Vocabulary
Greatest common factor
The greatest of the common factors of two or more numbers
Example 2-4b

5. Example 1 Multiply Fractions
Example 2 Multiply Fractions and Whole Numbers
Example 3 Simplify Before Multiplying
Example 4 Evaluate Expressions
Lesson 2 Contents

6. Multiply denominators
Write problem
Find 
Multiply numerators 
Multiply denominators
1  1
Simplify numerator
5  6
Simplify denominator
Since numerator is 1 we now the fraction is in simplest terms
Answer:
1/4
Example 2-1a

7. Find 
Answer:
1/4
Example 2-1b

8. Multiply denominators  Simplify numerator  Simplify denominator
Write problem
Find 
Put 1 as a denominator on 7
Multiply numerators 
Multiply denominators 
Simplify numerator 
Simplify denominator
Since numerator is larger than denominator, simplify with calculator
Answer:
2/4
Example 2-2a

9. Find 
Answer:
2/4
Example 2-2b

10. Multiply denominators
Write problem
Find 
Multiply numerators 
Multiply denominators
Simplify numerator  
Simplify denominator 6
 3
Numerator is smaller than denominator, must find GCF 63
 3
Divide GCF of 3 into numerator and denominator
Answer:
3/4
Example 2-3a

11. Find 
Answer:
3/4
Example 2-3b

12. Multiply denominators 36  12
ALGEBRA Evaluate
Write problem
Replace p with 
3  8
Replace q with
4  9
Multiply numerators 24
 12
Multiply denominators 36
 12
Numerator is smaller than denominator, must find GCF
Answer:
Divide GCF of 12 into numerator and denominator
4/4
Example 2-4a

13. *
ALGEBRA Evaluate
Answer:
4/4
Example 2-4b

14. Multiplying Fractions
Assignment
Lesson 7:2
Multiplying Fractions
All
End of Lesson 2