Free worksheets · Grade 5
Volume of Rectangular Prisms Worksheet
Multiply length × width × height and write the answer in cubic units.
Free printable
Volume of Rectangular Prisms
10 questions, one page, US Letter. Print it and do it on paper.
On the sheet: Multiply length × width × height. Write the answer in cubic units, like in³.
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About this worksheet
Volume is how much space a solid takes up, measured in cubes. A rectangular prism that is 6 feet long, 8 feet wide and 5 feet high holds 6 × 8 × 5 cubes, each one foot on every side.
The answer is in cubic units, like ft³ or in³, because each unit is a cube.
A worked example
A box 6 ft long, 8 ft wide and 5 ft high. What is its volume?
- Multiply the length and the width: 6 × 8 = 48. That many cubes cover the bottom layer.
- Multiply by the height: 48 × 5 = 240. That is 5 layers of 48.
- Write the unit as cubic feet: ft³.
Answer: 240 ft³
The common mistake
What it looks like: Adding the three measurements, 6 + 8 + 5 = 19, or writing the answer in square feet.
Why it happens: Perimeter adds the sides and area uses square units, and both come before volume.
How to fix it: Picture the layers: the bottom layer is length × width cubes, and the height says how many layers. A cube unit gets the little 3.
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