Adding and Subtracting Fractions Without Common Denominators

Solve.

• 5/8

• 23/40

• 21/40

• 1/2

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

• make equivalent fractions

• add again

• simplify

• multiply

What is the process of making two fractions with unlike denominators able to be added or subtracted called?

• Finding the least common multiple or least common denominator

• Addition

• Multiplication

• Reverse multiplication

When adding and subtracting fractions, which value needs to be the same in all values being added/subtracted?

• Numerator

• Denominator

What is the best common denominator for this problem?

• 6

• 8

• 24

• 48

Aden is helping his dad paint his house. They mixed 5/9 gallons of white paint and 1/6 gallons of blue paint. How many gallons was the mixture in all?

• 6/18 gallons

• 13/18 gallons

• 4/5 gallons

• 1/6 gallons

Stacy used 1/4 cup of sugar and 2/3 cup of flour to bake a cupcakes. How much more flour did Stacy use than sugar?

• 11/12 cup

• 10/12 cup

• 6/12 cup

• 5/12 cup

Jimmy filled a pitcher 1/2 of the way full with water. Carolyn filled a pitcher of the same size 5/6 of the way full with water. How much more water did Carolyn fill than Jimmy?

• 1/6 more water

• 2/3 more water

• 1/3 more water

• 3/6 more water

What is the best common denominator for this problem?

• 5

• 2

• 20

• 10