Adding and Subtracting Like Denominator Fractions

If we have common denominators and we want to add or subtract them we need to

• add/subtract the numerator and slide over the denominator.

• add/subtract the numerator and add/subtract the denominator.

To add or subtract fractions you must have

• Common numerators

• Common denominators

• Common multiples

• common factors

What is 3/4 + 1/4 = ?

• 4/4 

• 0/4

• 2/4

• 1/2

Kayla already had 3/9 of a pizza and Lille gave her 2/9 of a pizza. How much pizza does Kayla have now?

• 5

• 5/9

• 1/9

• 6/9

What is the sum of these fractions in lowest terms?

• 5/12

• 5/24

• 6/12

• 6/144

How do you add two fractions with like denominators?

• Add the denominators; keep the numerators the same

• Add the numerators and add the denominators

• Add the numerators to the denominators

• Add the numerators and keep the like denominators

What is 2/8 + 3/8 = ?

• 
• 
• 

Jada ate 3/8 of a pizza and Isaiah ate 2/8 of the pizza. How much pizza did they eat in all?

• 1/2

• 5/8

• 3/4

• 7/8

7/7 - 5/7 = ?

• 
• 
• 
• 

Solve and SIMPLIFY:

13/14 - 11/14

• 1/7

• 2/14

• 24/14

• 1 and 10/14