Add/Subtract Fractions Review

Adding Fractions

I want a slice of pizza...

 $\frac{3}{4}+\ \frac{2}{3}$  

How do we find this using an area model?

Multiple Choice

What is the first step we need to do?

• Find the least common denominator

• Find the least common numerator

Multiple Choice

The next step is to draw an ____ model.

• fraction

• addition

• area

Next, we need to make them into the same parts.

How pieces do they need to have?

If we rewrite these fractions with common denominators, it is:

 $\frac{9}{12}+\frac{8}{12}$  

Our Answer Is...!

Drumroll~

Open Ended

Solve:  $\frac{1}{3}+\frac{2}{5}$  

Let's try without the area model~

 $\frac{2}{9}+\frac{1}{6}$  

Let's try solving without the area model.

First step:

Find the least common multiples.

Least common multiples of 9 and 6:

9: 9, 18, 27, __, 45

6: 6, 12, 18, 24, __

Step 2:

Multiply both denominator and numerator

Open Ended

Solve: $\frac{4}{5}+\frac{1}{2}$ 

Poll

I understand how to add fractions with unlike(different) denominators.

• I can do it with my eyes closed!

• I understand! Just need more practice!

• I'm starting to understand but need some more help!

• I'm lost;; help!

Multiple Choice

There is a sport involving squirrels.

• True

• False