LET’S TRY ONE
A rectangular prism is 3 cm by 4 cm by 5 cm. What is its volume?
60
3 × 4 × 5 = 60 cubic centimeters.
Learning steps & teaching tips
Multiply length, width and height to count cubic units.
- Find cubes in a layer and multiply by the number of layers.
- Work through the example. Explain how its evidence supports the answer.
- Try a new question; use the explanation to check your thinking.
Try it together
Write or draw your own example with different numbers. Solve it, then ask a partner to check the method as well as the answer.
Find cubes in a layer and multiply by the number of layers.