1. 1 3 8 8 1.) Shade the model to help solve each problem. 2.)
3-2 Adding and Subtracting Fractions with Like Denominators
Shade the model to help solve each problem.
1.)
2.)

2. 2.) Keep the same denominator 3.) Reduce the fraction
To add or subtract fractions with like denominators:
1.) Add or subtract the numerators
2.) Keep the same denominator
3.) Reduce the fraction
4.) Rename improper fractions

3. Demonstrate Understanding
1.)
2.) _ _
3.)
4.)

4. 1.) a.) What happens when you try to add fractions
3-2 Adding and Subtracting Fractions with Unlike Denominators
Use the model to add the fractions.
1.)
a.) What happens when you try to add fractions
with different denominators?
b.) What do we need to do when the denominators
are different?

5. To add or subtract fractions with unlike denominators
1.) Find the LCM of the denominators
2.) Rewrite each fraction using the LCM as the denominator
3.) Add or subtract the numerators, keeping the denominator
4.) Reduce and rename as a mixed number if necessary
LCM: Listing method 9: 6:
Try some:
1.) + =
2.) - =

6. 3.)
4.)
6.)
5.)

7. 7. ) A circus has ten seating sections
7.) A circus has ten seating sections. Eight sections are 
filled for the first show. Six sections are filled for the 
second show. How much more of the entire seating area is 
filled for the first show?
8.) A park is currently of an acre. A local property 
owner donated acre to be added to the park. What is the new area of the park?