5th Grade Volume of Prisms and Cylinders Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 5th Grade volume & capacity worksheet.
5th Grade Volume of Prisms and Cylinders Worksheet — Level 2 — Practice Set 3 — Answers
Show your work. Volume is measured in cubic units (cm³).
1.A rectangular prism is 8 cm long, 6 cm wide and 8 cm high. Find its volume.
Answer: 384 cm3
- V = length × width × height = 8 × 6 × 8
- = 384 cm3
2.A rectangular prism is 8 cm long, 10 cm wide and 8 cm high. Find its volume.
Answer: 640 cm3
- V = length × width × height = 8 × 10 × 8
- = 640 cm3
3.A triangular prism has a triangular end with base 18 cm and height 7 cm. The prism is 13 cm long. Find its volume.
Answer: 819 cm3
- Area of the triangle = ½ × 18 × 7 = 63 cm2
- V = area of end × length = 63 × 13
- = 819 cm3
4.A triangular prism has a triangular end with base 6 cm and height 4 cm. The prism is 7 cm long. Find its volume.
Answer: 84 cm3
- Area of the triangle = ½ × 6 × 4 = 12 cm2
- V = area of end × length = 12 × 7
- = 84 cm3
5.A triangular prism has a triangular end with base 18 cm and height 8 cm. The prism is 12 cm long. Find its volume.
Answer: 864 cm3
- Area of the triangle = ½ × 18 × 8 = 72 cm2
- V = area of end × length = 72 × 12
- = 864 cm3
6.A triangular prism has a triangular end with base 18 cm and height 9 cm. The prism is 15 cm long. Find its volume.
Answer: 1,215 cm3
- Area of the triangle = ½ × 18 × 9 = 81 cm2
- V = area of end × length = 81 × 15
- = 1,215 cm3
7.A rectangular prism is 12 cm long, 4 cm wide and 5 cm high. Find its volume.
Answer: 240 cm3
- V = length × width × height = 12 × 4 × 5
- = 240 cm3
8.A rectangular prism has a volume of 480 cm3. Its base is 12 cm by 10 cm. Find its height.
Answer: 4 cm
- Base area = 12 × 10 = 120 cm2
- Height = 480 ÷ 120 = 4 cm
9.A rectangular prism is 8 cm long, 3 cm wide and 3 cm high. Find its volume.
Answer: 72 cm3
- V = length × width × height = 8 × 3 × 3
- = 72 cm3
10.A rectangular prism has a volume of 96 cm3. Its base is 4 cm by 6 cm. Find its height.
Answer: 4 cm
- Base area = 4 × 6 = 24 cm2
- Height = 96 ÷ 24 = 4 cm
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.