1. Multiplying Fractions is way easier than adding and subtracting.

2. Multiplying Fractions
Mr. Milano, I’m lost! 4 3 x = 7 6
YOU DO NOT NEED A COMMON DENOMINATOR

3. Multiplying Fractions
Oh, I remember! 4 3
Oh good! x = 7 6
YOU DO NOT NEED A COMMON DENOMINATOR

4. Multiplying Fractions
Wait, which ones? 4 3
Oh good! x = 7 6
YOU DO NOT NEED A COMMON DENOMINATOR
Step 1: Multiply the numerators.

5. Multiplying Fractions
Straight across!! 4 3 12
4 x 3 = 12 x = 7 6
YOU DO NOT NEED A COMMON DENOMINATOR
Step 1: Multiply the numerators.
Step 2: Multiply the denominators

6. Multiplying Fractions
Almost there! 4 3 12
7 x 6 = 42 x = 7 6 42
YOU DO NOT NEED A COMMON DENOMINATOR
Step 1: Multiply the numerators.
Step 2: Multiply the denominators
Step 3: Simplify!

7. Multiplying Fractions4 3 12 6 / 2 7 x = = 7 6 42
This is easy!
YOU DO NOT NEED A COMMON DENOMINATOR
Step 1: Multiply the numerators.
Step 2: Multiply the denominators
Step 3: Simplify!

8. Adding Fractions with common denominators
Step 1: Add the numerators!
Step 2: Leave the Denominator alone!
Step 3: Simplify!!

9. Adding Fractions with different denominators
Problem:
You can’t add fractions with different denominators.
Solution:
Turn fractions into equivalent fractions with the easiest common denominator

10. Finding the Easiest Common Denominator
Multiply denominator to the opposite side (top & bottom)
Example 1
2 2
3 3

11. Finding the Easiest Common Denominator
Multiply denominator to the opposite side (top & bottom)
Example 1
x 2 2
3 3 x

12. Finding the Easiest Common Denominator
Multiply denominator to the opposite side (top & bottom)
Example 1
x 2 2
3 3 x
3 6
2 6

13. Finding the Easiest Common Denominator
Multiply denominator to the opposite side (top & bottom)
Example 1
5 6

14. You can’t add fractions with different denominators+
The Lowest Common Multiple of 2 and 3 is 6 so turn all fractions into sixths
Special form of 1

15. Lowest common denominator is 10 so make all fractions tenths
Example 2
Lowest common denominator is 10 so make all fractions tenths

16. Example 3:
Turn both fractions into twelfths