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Surface area of rectangular prisms with fractional edges

Grade 6 math · Fieldbook Learning

Name ______________________ Date __________

Find the area of the three different faces, add them, then double the total. Write the answer in lowest terms, as a mixed number if needed, like 3 1/2.

  1. A rectangular prism is 2 ft long, 1 1/2 ft wide and 1 1/2 ft tall. What is its surface area in square feet?
  2. A rectangular prism is 2 ft long, 1/2 ft wide and 1 ft tall. What is its surface area in square feet?
  3. A rectangular prism is 1 in long, 1 in wide and 1 1/2 in tall. What is its surface area in square inches?
  4. A rectangular prism is 1 cm long, 2 cm wide and 1 1/2 cm tall. What is its surface area in square centimetres?
  5. A rectangular prism is 1/2 m long, 2 1/2 m wide and 1/2 m tall. What is its surface area in square metres?
  6. A rectangular prism is 2 1/2 cm long, 2 1/2 cm wide and 2 cm tall. What is its surface area in square centimetres?
  7. A rectangular prism is 3 ft long, 1/2 ft wide and 1 1/2 ft tall. What is its surface area in square feet?
  8. A rectangular prism is 2 1/2 in long, 2 1/2 in wide and 2 1/2 in tall. What is its surface area in square inches?
  9. A rectangular prism is 1/4 cm long, 1 cm wide and 1/4 cm tall. What is its surface area in square centimetres?
  10. A rectangular prism is 3/4 m long, 1/2 m wide and 1/4 m tall. What is its surface area in square metres?
  11. A rectangular prism is 3/4 m long, 1 m wide and 1/4 m tall. What is its surface area in square metres?
  12. A rectangular prism is 1/4 cm long, 1 cm wide and 3/4 cm tall. What is its surface area in square centimetres?
  13. A rectangular prism is 1/2 ft long, 1 1/2 ft wide and 3/4 ft tall. What is its surface area in square feet?
  14. A rectangular prism is 1 1/4 m long, 3/4 m wide and 1/4 m tall. What is its surface area in square metres?
  15. A rectangular prism is 1 1/4 m long, 1 3/4 m wide and 1 3/4 m tall. What is its surface area in square metres?
  16. A rectangular prism is 1/2 ft long, 3/4 ft wide and 1 ft tall. What is its surface area in square feet?
  17. A rectangular prism is 2 cm long, 2 cm wide and 3/4 cm tall. What is its surface area in square centimetres?
  18. A rectangular prism is 1 in long, 1/2 in wide and 3/4 in tall. What is its surface area in square inches?
  19. A rectangular prism is 1 1/2 cm long, 1 1/2 cm wide and 1 3/4 cm tall. What is its surface area in square centimetres?
  20. A rectangular prism is 1 1/2 in long, 1 1/2 in wide and 3 in tall. What is its surface area in square inches?
More free practice: fieldbooklearning.com/ca/practice/grade-6/surface-area-of-rectangular-prisms-with-fractional-edges/

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5 of these questions as multiple choice, with near-miss wrong answers, ready for Kahoot or Blooket.

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Answer key: Surface area of rectangular prisms with fractional edges

  1. 16 1/2
  2. 7
  3. 8
  4. 13
  5. 5 1/2
  6. 32 1/2
  7. 13 1/2
  8. 37 1/2
  9. 1 1/8
  10. 1 3/8
  11. 2 3/8
  12. 2 3/8
  13. 4 1/2
  14. 2 7/8
  15. 14 7/8
  16. 3 1/4
  17. 14
  18. 3 1/4
  19. 15
  20. 22 1/2