K12Junior

GRADE 5 · PRINTABLE PRACTICE

Volume with unit cubes worksheet

Count layers of unit cubes to find a rectangular prism’s volume. Print nine grade 5 questions with an answer key and explanations for home or classroom practice.

Prepare your worksheet

Try the questions on paper. Open the answer key to check your work. When printing, the answer key can be included on a separate page.

Learn the method and try online practice

Practice questions

Name: ____________________________   Date: ______________

Count layers of unit cubes to find a rectangular prism’s volume. Show your thinking where helpful.

  1. A rectangular prism is 2 units long, 3 units wide, and 2 units tall. Find its volume in cubic units.

  2. A rectangular prism is 3 units long, 4 units wide, and 3 units tall. Find its volume in cubic units.

  3. A rectangular prism is 4 units long, 5 units wide, and 4 units tall. Find its volume in cubic units.

  4. A rectangular prism is 5 units long, 6 units wide, and 2 units tall. Find its volume in cubic units.

  5. A rectangular prism is 6 units long, 7 units wide, and 3 units tall. Find its volume in cubic units.

  6. A rectangular prism is 7 units long, 3 units wide, and 4 units tall. Find its volume in cubic units.

  7. A rectangular prism is 8 units long, 4 units wide, and 2 units tall. Find its volume in cubic units.

  8. A rectangular prism is 9 units long, 5 units wide, and 3 units tall. Find its volume in cubic units.

  9. A rectangular prism is 10 units long, 6 units wide, and 4 units tall. Find its volume in cubic units.

Answer key and explanations

Answer key

  1. 12 — 2 × 3 × 2 = 12 cubic units.
  2. 36 — 3 × 4 × 3 = 36 cubic units.
  3. 80 — 4 × 5 × 4 = 80 cubic units.
  4. 60 — 5 × 6 × 2 = 60 cubic units.
  5. 126 — 6 × 7 × 3 = 126 cubic units.
  6. 84 — 7 × 3 × 4 = 84 cubic units.
  7. 64 — 8 × 4 × 2 = 64 cubic units.
  8. 135 — 9 × 5 × 3 = 135 cubic units.
  9. 240 — 10 × 6 × 4 = 240 cubic units.

What to do next

If a question was difficult, return to the lesson’s worked example and explain one step aloud. These nine questions are focused practice, not a diagnostic assessment.

Open Volume with unit cubes lesson