Adding and Subtracting Fractions Unlike Word Problems

Gail made 7/8 quart of lemonade. Her sister drank 1/4 quart of the lemonade. How much lemonade is left?

• 1 quart

Oliver swam three - sevenths of a mile on Saturday and two - sevenths of a mile on Sunday. Which day did Oliver swim farther and by how much?

• Saturday, by 1/7 of a mile 

• Saturday, by 5/7 of a mile 

• Sunday, by 1/7 of a mile 

• Sunday, by 5/7 of a mile

Altogether

• Add

• Subtract

When the denominators are not the same, I must find a...

• common numerator

• common denominator

• equivalent fraction

• mixed number

When adding or subtracting fractions, I NEVER add or subtract the...

• numerators

• denominators

• mixed numbers

• equivalent fractions

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction

• Rewrite the fractions in the simplest form. 

• Find a common denominator. 

• Make each fraction into an improper faction. 

Is this a correct answer?

• Yes, the student correctly added.

• No, you cannot add unlike denominators

• No, 5 + 7 is not 12

• No, 2 + 3 is not 5

Jenna bought a spool of ribbon for her craft projects. It contained 5 3/4 meters of ribbon.  She used 3 2/5 meters of ribbon for a project.  How many meters of ribbon does Jenna have left?

• 2 7/20

• 1 8/20

• 4 3/20

• 3 7/20

John's full backpack weighs 5 1/2 pounds, and Tyrone's full backpack weighs 6 3/5 pounds. What is the total weight of both boys' backpacks?

• 12 4/10

• 10 2/10

• 11 1/10

• 12 1/10

On Saturday, Tim and Bob had a sleepover. For dinner, Tim and Bob ate 9/12 of the pizza. Tim ate 5/12 of the pizza. What fraction of the pizza did Bob eat?

• 3/12

• 9/12

• 14/12

• 4/12