Standard: 5.MD.C.5.A
Relate volume to the operations of multiplication and addition and solve real world and mathematical
problems involving volume.
A. Find the volume of a right rectangular prism with whole-number side lengths by packing it with
unit cubes, and show that the volume is the same as would be found by multiplying the edge
lengths, equivalently by multiplying the height by the area of the base. Represent threefold whole
number products as volumes, e.g., to represent the associative property of multiplication.
* NOTE: In 5.MD.C.5.A students are NOT using the formula L x W x H, they are discovering the
formula.
Math Practice Standards: MP.1, MP.2, MP.3, MP.4, MP.6, MP.7, MP.8
Task Exemplar:
Chase built a rectangular prism that is 7 centimeters by 2 centimeters by 5
centimeters.
Part A
What multiplication equation could Chase use to find the volume of his prism?
Part B
Draw a different rectangular prism with the same volume as Chase’s prism.
Part C
Explain how you know the volume of your prism is the same as Chase’s prism.