5th Grade Fraction Review

To add or subtract, two fractions must have...

• a monkey

• a common denominator

• unlike terms

• the same numerators

Answer explanation

To add or subtract, two fractions must have a common denominator, allowing for accurate calculations.

It took Gerard five-thirds of an hour to complete his math homework on Monday, three-fourths of an hour on Tuesday, and five-sixths of an hour on Wednesday. How many hours did he take to complete his homework altogether?

• It took Gerard a half an hour to complete his homework altogether.

• It took Gerard two and two-fourth hours to complete his homework altogether.

• It took Gerard three and one-thrid hours to complete his homework altogether.

• It took Gerard three and one-fourth hours to complete his homework altogether.

Answer explanation

Gerard took five-thirds + three-fourths + five-sixths hours to complete his homework. Convert to a common denominator, which is 12. The total is 15/12 + 9/12 + 10/12 = 34/12 = 2 10/12 = 3 1/4 hours.

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

• 1 quart

Answer explanation

To find out how much lemonade is left, subtract the amount her sister drank (1/4 quart) from the total amount Gail made (7/8 quart): 7/8 - 1/4 = 5/8 quart left.

MarthaMayMarbleWay has a pink ribbon and a purple ribbon. The pink ribbon is 6 1/5 inches long. The purple ribbon is 8 2/10 inches. How much ribbon does she have?

Answer explanation

To find the total length of ribbon, add the lengths of the pink and purple ribbons: 6 1/5 + 8 2/10 = 14 2/5 inches. Therefore, MarthaMayMarbleWay has 14 2/5 inches of ribbon.

Sandra is making vegetable soup. If she makes 18 cups of soup, how many cups of peas does she need?

• 3/4 cup

• 1/4 cup

• 1 1/2 cups

• 4 1/2 cups

Answer explanation

To make 18 cups of soup, Sandra needs 1 1/2 cups of peas. Therefore, she needs 1 1/2 cups of peas for the vegetable soup.

One batch of fruit punch contains 1/4 quart grape juice and 1/2 quart apple juice. Colby makes 9 batches of fruit punch. Which of the following questions does NOT need to be answered to find how many cups of fruit punch Colby made?

• How much grape juice did he use for

  9 batches?

• How much apple juice did he use for

  9 batches?

• How many 1/4-quarts and 1/2-quarts

  are in 9 quarts?

• How many cups are in 1 quart?

Answer explanation

The question asks for the total cups of fruit punch made, so the amount of apple juice used for 9 batches is not necessary to calculate the total cups of fruit punch.

A recipe for muffins calls for 3/4 cup of flour. Carlito is making 6 batches of muffins. How much flour does he need?
What operation do you do to solve this problem?

• Add

• Subtract

• Multiply

• Divide

Answer explanation

To solve the problem, you need to multiply the amount of flour needed for one batch by the number of batches. In this case, 3/4 cup of flour x 6 batches = 4.5 cups of flour needed.

Beth had 3 and 1/4 cups of milk. She used 1 and 3/4 cups of the milk to bake a cake. How many cups of milk does Beth have left?
What operation do you use to solve this problem?

• Add

• Subtract

• Multiply

• Divide

Answer explanation

To solve this problem, you need to subtract the amount of milk used for the cake from the total amount of milk Beth had. Therefore, the correct operation to use is Subtract.

Penny raked 3/5 of her yard on Saturday and 1/3 of her yard on Sunday. How much of her yard did she rake?
What operation do you use to solve this problem?

• Add

• Subtract

• Multiply

• Divide

Answer explanation

To find the total amount of yard Penny raked, you need to add the fractions 3/5 and 1/3. Therefore, the correct operation to use is Add.

Simon has 1/5 of a gallon of cranberry juice, 1/3 of a gallon of apple juice, and 7/10 of a gallon of grape juice. How much juice does Simon have?

• 9/30

• 1/2

• 1  7/30

• 1  13/30

Answer explanation

The correct answer is 1 & 7/30 as Simon has a total of 1 & 7/30 gallons of juice by adding 1/5, 1/3, and 7/10 gallons.