Fractions Add Unlike Denominators

Sally is painting her house. She used 1/8 of a gallon of paint in her bathroom, and 2/6 of a gallon of paint in her bedroom. How much paint did she use in all?

• 11/24

• 3/14

• 3/24

• 11/14

Once I have completed adding or subtracting fractions, I should always ____________ if possible.

• make equivalent fractions

• add again

• simplify

• multiply

What like unit can I use for 1/10 and 1/3?

• 6

• 5

• 1

• 30

USE SCRATCH PAPER AND SOLVE THIS WORD PROBLEM:
The classroom made cookies. They used 1 1/4 cups of white flour for the chocolate chip cookies. They used 2 1/3 cups of flour for peanut butter cookis. How much flour did they use in total?

• 3 2/7 cups

• 3 7/12 cups

• 1 1/12 cups

• 1 2/7 cups

When I add or subtract fractions I must have _________ units.

• denominator

• numerator

• like

• unlike

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator

What is the least common denominator for 1/3 and 3/4?

• 6

• 4

• 3

• 12

Add the fractions. Simplify if needed.

• 1

8/9 - 1/3 = 

• 7/6

• 5/9

• 2/3

• 8/27

What number could be a common denominator for these two fractions?
1/5   and   5/6?

• 30

• 11

• 6

• 5