Adding and Subtracting Fractions

To add or subtract, two fractions must have...

• a monkey.

• unlike terms.

• common denominators.

• the same numerators.

If I want to add pineapple to  $\frac{6}{12}$  of my pizza, that is equal to...

•  $\frac{1}{6}$  .

•  $\frac{3}{4}$  .

•  $\frac{2}{1}$  .

•  $\frac{1}{2}$  .

To find the sum, you need to...

• add

• subtract

• multiply

• divide

Evaluate the expression:  $\frac{2}{3}+\frac{1}{6}$  

• 1

•  $\frac{5}{6}$  

•  $\frac{7}{8}$  

•  $\frac{3}{3}$  

 $\frac{4}{7}+\frac{1}{3}=$  

•  $\frac{17}{21}$  

•  $\frac{19}{21}$  

•  $\frac{5}{10}$  

•  $\frac{5}{21}$  

3/5 + 3/10

• 9/12

• 9/10

• 3/5

• 6/10

1/3 + 1/9

• 4/9

• 9/12

• 6/15

• 3/12

5/12 + 1/3

• 6/12

• 9/12

• 6/15

• 3/4

1/6 + 1/12

• 3/12

• 3/8

• 2/12

• 1/4

2/3 +2/9

• 4/9

• 8/9

• 4/12

• 4/18