Adding and Subtracting Fractions

Nathan collected 5/6 of a carton of eggs on Saturday and 8/12 on Sunday. How many eggs did he collect on both days?

• 18/12

• 9/6

• 1 1/2

• 1 3/6

Mrs. O'Hare bought a cake for the teachers of Palisades Park Elementary. The teachers ate 4/10 of the cake before lunch, 1/5 after lunch, and 12/100 after school. How much of the cake got eaten during the day?

• 8/10

• 72/100

• 36/50

• 18/25

Robert made a fruit salad with\frac{11}{12} of a pound of melon and \frac{1}{6} of a pound of berries. How many pounds of fruit did Robert use in all?

The cafeteria served pizza for lunch to three fifth grade classes. The cafeteria made 18 pizzas to be shared by the three classes. Mrs. Nelson’s class ate 5 1/2 pizzas. Mr. Thomas’ class ate 7 3/4 pizzas. How much pizza was left for Mr. Bone's class?

• 4 3/4

• 5 3/4

• 12 3/4

• 13 1/4

Josie has three plants. She is keeping track of how much the plants grow. The table below shows how many inches the plants have grown.

About how many inches have the three plants grown altogether?

• 9in

• 10in

• 11in

• 12in

Macy washed her dirty clothes over the weekend. She used 1 1/3 scoops of detergent for her white load and 9/12 of a scoop of detergent for her color load. How much more laundry detergent did she use in the white load?

• 1/12 of a scoop

• 2/12 of a scoop

• 5/12 of a scoop

• 7/12 of a scoop

Maggie carried 3 bags of groceries in from the grocery store.

The first bag weighed 45/12 pounds.

The second bag weighed 21/6 pounds.

The third bag weighed 12/3 pounds.

She carried the first bag in her left hand. She carried the second and third bag in her right hand. How much more weight did she carry with her left hand than her right hand?

• 8 5/12 pounds

• 3 5/6 pounds

• 1 3/12 pounds

• 7/12 pound

Abuela had 6 cups of flour. She used 42/3 cups of flour to make cookies. How many cups of flour does Abuela have left?

• 1 1/3 cups

• 2 1/3 cups

• 2 2/3 cups

• 10 2/3 cups

Javion drank 7/8 quart of juice in two days. He drank 1/4 quart of juice yesterday. How much did he drink today?

• 5/8 quart

• 6/8 quart

• 1 1/4 quarts

• 1 1/8 quarts

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

• a monkey

• a common denominator

• unlike terms

• the same numerators