Adding and Subtracting Fractons

The number on top of the fraction bar is called the _______. The number under the fraction bar is called the ______.

• denominator; numerator

• numerator; denominator

• mixed number; fraction

• fraction; mixed number

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 8 and 4?

• 32

• 8

• 16

• 4

Oscar began his pizza delivery route with 5/6 of a tank of gas in his car. When he made it back to the pizzeria, 1/3 of a tank of gas was left. How much gas did Oscar use making the deliveries?

• 1/6 of a tank

• 1/3 of a tank

• 1/4 of a tank

• 1/2 of a tank

Kristen watched two worms on the sidewalk. The larger worm crawled 2/3 of a foot and the smaller worm crawled 1/2 of a foot. How much farther did the larger worm crawl than the smaller worm?

• 1/6 foot

• 5/6 foot

• 7/6 foot

• 1 1/6 foot

Christine baked a pumpkin pie. She ate 1/6 of the pie. Her brother ate 1/3. How much of the pie was left?

• 1/18

• 2/9

• 1/2

• 2/3

Monique wants to bake a cake. She needs 2 3/8 cups of sugar, and 1 1/2 cups of flour. How many cups of ingredients will she use in all?

• 3 14/16 cups

• 3 4/8 cup

• 3 4/16 cups

• 3 7/8 cups

Tiffany bought 2/5 kg of cherries.  Linda bought 1/10kg of cherries.  How many kg of cherries did they buy altogether?  

• 1/5 kg
• 3/10 kg
• 5/15 kg
• 1/2 kg

​Zoey, Alexis, and Ariana were making bracelets. They need 1​ 2⁄3 ​ more meters of cordage to complete their bracelets. Zoey has 5/6 meter of cordage, Ariana has 1/2 meter of cordage, and Alexis had 1/3 meter of cordage. Do they have enough cordage to finish their bracelets?

• No, they only have 1 1/2 meters of cordage.

• Yes, they have enough with 1 2/3 meters of cordage.

• No, they only have 1 4/6 meters of cordage.

• Yes, they have enough with 1 4/6 meters of cordage.