Adding and Subtracting Fraction Models

Eric needs 1/2 deck of cards for a magic trick.He only has 2/7 of a deck.What fraction of a deck does Eric still need?

• Eric still needs 1/5 of a deck.

• Eric still needs 11/14 of a deck.

• Eric still needs 3/14 of a deck.

• Eric still needs 3/9 of a deck.

Randy ran 1 3/4 miles.Natasha ran 9/10 miles. How many more miles did Randy run than Natasha?

• Randy ran 17/20 miles more than Natasha.

• Randy ran 3/20 miles more than Natasha.

• Randy ran 12/14 miles more than Natasha.

• Randy ran 12/20 miles more than Natasha.

It takes Lacy 8 1/3 sec to climb up the slide & 2 1/4 sec to go down. How many sec is Lacy's trip up & down the slide?

• Lacy's trip is 10 7/12 seconds long.

• Lacy's trip is 6 1/12 seconds long.

• Lacy's trip is 10 2/7 seconds long.

• Lacy's trip is 11 seconds long.

Robert's gas tank has 5 3/5 gallons of gas in it. If he adds 7 2/3 gallons, how much gas will be in the tank?

• There will be 13 4/15 gallons of gas in the tank.

• There will be 2 1/15 gallons of gas in the tank.

• There will be 12 5/8 gallons of gas in the tank.

• There will be 2 1/2 gallons of gas in the tank.

Peter's hat size is 7 3/8 units. Cal's hat size is 6 7/12 units. How many units larger is Peter's hat size than Cals?

• Peter's hat size is 2 units larger than Cal's.

• Peter's hat size is 1 5/24 units larger than Cal's.

• Peter's hat size is 13 10/20 units larger than Cal's.

• Peter's hat size is 19/24 units larger than Cal's.

A soccer ball weighs 6oz. fully inflated. Ray has inflated the ball 4 2/3 oz. How many more oz. must be added?

• The ball needs 2 2/3 more oz. to be fully inflated.

• The ball needs 1 1/3 more oz. to be fully inflated.

• The ball needs 10 2/3 more oz. to be fully inflated

• The ball needs 2 more oz. to be fully inflated.

Vanna used the fraction strips shown to help her determine the difference between 5/6 and 1/4. What is 5/6-1/4?

• 1/5

• 7/12

• 1/2

• 5/8

Albert served a cake at his sister's birthday party. More of the cake was then eaten after the party. The models are shaded to show the amount of cake that was eaten at the party and after the party. Which fraction of the cake was eaten altogether?

• 5/10

• 5/15

• 2/5

• 4/5

The shaded part of the model below represents a fraction. The model represents another fraction being subtracted from the shaded fraction. Which expression does this model represent?

• 7/12 - 1/12

• 8/9 - 7/9

• 2/3 - 7/12

• 8/12 - 5/12

Mr. Hobson is training for a triathlon. The model is shaded to represent the fraction of a mile that he completes in a practice session. How many miles does Mr. Hobson complete in all during his training session?

• 5/14 of a mile

• 5/8 of a mile

• 1 3/8 miles

• 1 1/8 miles