Free Grade 3 Introducing Surface Area Common Errors Worksheets
Free Grade 3 worksheets for Introducing Surface Area Common Errors: 12 real questions with a full answer key and worked solutions. Volume is how much space a 3D shape takes up. For a cuboid, multiply length × width × height. Surface area is the total area of all faces.
Free
Core
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain introducing surface area common errors
Explain introducing surface area common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing surface area common errors
Calculate introducing surface area common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing surface area common errors
Compare introducing surface area common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify introducing surface area common errors
Justify introducing surface area common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
Prerequisites
Close these gaps first — each has its own free lesson, worksheet and quiz.
How Introducing Surface Area Common Errors works
Volume is how much space a 3D shape takes up. For a cuboid, multiply length × width × height. Surface area is the total area of all faces.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.Find the volume of a cuboid 4 cm × 8 cm × 10 cm.[1]
- 2.Find the volume of a cuboid 2 cm × 2 cm × 10 cm.[1]
- 3.Find the volume of a cuboid 4 cm × 5 cm × 6 cm.[1]
- 4.Find the volume of a cuboid 8 cm × 7 cm × 10 cm.[1]
- 5.Find the volume of a cuboid 9 cm × 8 cm × 10 cm.[2]
- 6.Find the volume of a cuboid 5 cm × 7 cm × 6 cm.[2]
- 7.Find the volume of a cuboid 4 cm × 10 cm × 5 cm.[2]
- 8.Find the volume of a cuboid 9 cm × 9 cm × 10 cm.[2]
- 9.Find the surface area of a cuboid 2 cm × 6 cm × 2 cm.[3]
- 10.Find the surface area of a cuboid 5 cm × 7 cm × 4 cm.[3]
- 11.Find the surface area of a cuboid 10 cm × 6 cm × 6 cm.[3]
- 12.Find the surface area of a cuboid 2 cm × 5 cm × 7 cm.[3]
Show answers and working
1. 320 cm³
Volume = length × width × height. 4 × 8 × 10 = 320 cm³.
2. 40 cm³
Volume = length × width × height. 2 × 2 × 10 = 40 cm³.
3. 120 cm³
Volume = length × width × height. 4 × 5 × 6 = 120 cm³.
4. 560 cm³
Volume = length × width × height. 8 × 7 × 10 = 560 cm³.
5. 720 cm³
Volume = length × width × height. 9 × 8 × 10 = 720 cm³.
6. 210 cm³
Volume = length × width × height. 5 × 7 × 6 = 210 cm³.
7. 200 cm³
Volume = length × width × height. 4 × 10 × 5 = 200 cm³.
8. 810 cm³
Volume = length × width × height. 9 × 9 × 10 = 810 cm³.
9. 56 cm²
Three pairs of faces: 12, 12, 4. 2 × (12 + 12 + 4) = 56 cm².
10. 166 cm²
Three pairs of faces: 35, 28, 20. 2 × (35 + 28 + 20) = 166 cm².
11. 312 cm²
Three pairs of faces: 60, 36, 60. 2 × (60 + 36 + 60) = 312 cm².
12. 118 cm²
Three pairs of faces: 10, 35, 14. 2 × (10 + 35 + 14) = 118 cm².
Worked examples
Find the volume of a cuboid 8 cm × 10 cm × 10 cm.
- Volume = length × width × height.
- 8 × 10 × 10 = 800 cm³.
- Answer: 800 cm³
Find the volume of a cuboid 5 cm × 4 cm × 10 cm.
- Volume = length × width × height.
- 5 × 4 × 10 = 200 cm³.
- Answer: 200 cm³
Find the surface area of a cuboid 3 cm × 7 cm × 2 cm.
- Three pairs of faces: 21, 14, 6.
- 2 × (21 + 14 + 6) = 82 cm².
- Answer: 82 cm²
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Adds the dimensions instead of multiplying.
Correction: Volume = l × w × h.
Counts only three faces for surface area.
Correction: A cuboid has six faces — three matching pairs.
Teacher tips
- · Build cuboids from cubes before using the formula.
Parent tips
- · Work out how many sugar cubes fit in a box.
Real-life applications
- · Filling a fish tank, wrapping a present.
Assessment objectives
How mastery is evidenced, and which standards it maps to.
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Frequently asked
- Is this Grade 3 Introducing Surface Area Common Errors worksheet really free?
- Yes. Every worksheets on FreeMathWorksheet is free to use, print and share — no account, no paywall and no watermark.
- What should a learner already know before this?
- Start with Introducing Surface Area Word Problems, Introducing Surface Area Techniques, Nets. Each one has its own free lesson, worksheet and quiz.
- How is the worksheet sequenced?
- Recognition first, then understanding, application, reasoning and finally mastery — the same ladder used across every free resource on the platform.
- What comes next after Introducing Surface Area Common Errors?
- Move on to Working with Surface Area, Surface Area in Context, which build directly on this idea.
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