Volume Expressions: Round Robin

Student Name: _____________________________

Date: ________________

Volume Expressions: Round Robin 

Pass your paper to the person seated at your right and determine the expression for the first problem on the paper you have received. You may work with your group to determine the expression. Circle the appropriate expression.

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Upon completion, pass the papers to the right again and complete the second problem. Again, you may work together to determine the expression.

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Continue this process for the remaining problems. 1. Betty’s Beauty Bar sells bath soap in the shape of a sphere. The diameter of the soap is 2.5 inches and the cost per cubic inch is $0.75. Which expression could be used to determine the cost of each sphere to the nearest cent?

3

4  2.5   3  2 

0.75

3 4  2.5   0.75  3

3. Shaved ice is served in cone-shaped cups that have a diameter of 3 inches and a height of 4 inches. If the coneshaped cup is filled to the top, which expression could be used to determine the approximate volume of the shaved ice in cubic inches?

1 3  3  2 

2

4

2 1  3   4  3

2. Karla has a cylindrical candy jar that is 5 inches tall and has a radius of 1.25 inches. The candy jar is 75% full. Which expression could be used to determine the approximate volume of the candy in cubic inches?

 1.25 2  75  ( ) 5   2  

0.75  (1.25)2 5 

4. Myrna has a cylindrical ice cream mold with a radius of 1.5 inches and a height of 4.5 inches. If she places 5 cubic inches of fruit in the mold, which expression could be used to determine the approximate volume of ice cream in cubic inches needed to fill the mold?  1.5 

2

 4.5  5

 1.5 

2

 4.5  5

Communicating about Mathematics Select one of the problems above and draw a diagram to match the problem situation. Label the dimensions.  

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