Fraction operations

8/21 + (-5/21) =

• 13/21
• -3/21
• -13/21
• 3/21

Find the sum.  Be sure to simplify.
-⅘ + ⅕

• -1
• -⅗
• ⅗
• 5/5

What is the difference of these fractions in lowest terms?

• 7/9
• 1/5
• 12/20
• 1/20

When adding integers with DIFFERENT signs...

• you take the sign of the smaller absolute value
• you take the sign of the larger absolute value
• the sign becomes positive
• the sign becomes negative

Jada ate 3/8 of a pizza and Isaiah ate 1/4 of the pizza. How much pizza did they eat in all?

• 1/2
• 5/8
• 3/4
• 7/8

A construction company is digging a pit to build the foundation of a house. At the end of the first day, the company had hauled away 1/6 of a truckload of dirt. On the second day, they hauled away 2/6 of a truckload. How many truckloads did they haul away in all?

• 1/4 truckload
• 1/2 truckload
• 3/4 truckload
• 1/3 truckload

Carefully following a recipe, Carly used exactly 2/4 of a cup of oil and 3/8 of a cup of water. How many cups of liquid did Carly use in all?

• 2/3 cup of oil
• 7/8 cup of oil
• 1/4 cup of oil
• 1/8 cup of oil

What do you need to have when adding unlike fractions?

• common denominator
• common numerator
• common numerator and denominator

• 4/35

• 24/35

• 4/5

• 12/35

• 5/10 mile