Students will learn how to find the volume of composite right rectangular prisms by adding and subtracting volumes of right rectangular prisms. Here's an example problem: Find the volume of the figure below:

Here's its solution.

Watch these Khan Academy videos:

Do these Khan Academy exercises:

Next, give your students these challenges:

- 2015 Math Kangaroo Levels 5-6 Problem #28 by STEM4all
- 2017 Math Kangaroo Levels 3-4 Problem #20 by STEM4all

Conclude by leading this investigation:

Beetle Blitz!

by MathPickle

5.MD.C.5: Relate volume to the operations of multiplication and addition and solve real world and mathematical problems involving volume.