1. Fraction Addition

2. ¾ + ¾
Count the pieces

3. Try some
4/5 + 3/5

4. Compare

5. Try some

6. Apples and Oranges
The things you add have to be the same size

7. Common Denominator
A number all original denominators divide into evenly
12 is a common denominator because 3 and 4 both divide 12 evenly.

8. Least Common Denominator
To find the least common denominator
Write the times table list for each denominator
The smallest number that is in all rows is the least common denominator

9. Least Common Denominator
To find the least common denominator
Write the times table list for each denominator
The smallest number that is in all rows is the least common denominator

11. Try One
Find the common denominator for these fractions
A) 2/3 + 3/5
B) ¾ + 7/12
C) 2/5 + 3/8 + 7/10

12. Addition Find a common denominator Raise to the denominator Add
Simplify

13. Addition Find a common denominator Raise to the denominator Add
Simplify

14. Addition Find a common denominator Raise to the denominator Add
Simplify

15. Try one