Free Grade 3 Working with Introducing Nets Common Errors: Step-by-step Method Lessons
Free Grade 3 lessons for Working with Introducing Nets Common Errors: Step-by-step Method: 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
Higher
35 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with introducing nets common errors: step-by-step method
Identify working with introducing nets common errors: step-by-step method accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with introducing nets common errors: step-by-step method
Explain working with introducing nets common errors: step-by-step method accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing nets common errors: step-by-step method
Calculate working with introducing nets common errors: step-by-step method accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing nets common errors: step-by-step method
Compare working with introducing nets common errors: step-by-step method 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 Working with Introducing Nets Common Errors: Step-by-step Method 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 × 4 cm × 2 cm.[1]
- 2.Find the volume of a cuboid 3 cm × 7 cm × 6 cm.[1]
- 3.Find the volume of a cuboid 10 cm × 4 cm × 2 cm.[1]
- 4.Find the volume of a cuboid 3 cm × 10 cm × 5 cm.[1]
- 5.Find the volume of a cuboid 4 cm × 10 cm × 5 cm.[2]
- 6.Find the volume of a cuboid 6 cm × 4 cm × 2 cm.[2]
- 7.Find the volume of a cuboid 10 cm × 8 cm × 2 cm.[2]
- 8.Find the volume of a cuboid 3 cm × 2 cm × 8 cm.[2]
- 9.Find the surface area of a cuboid 9 cm × 8 cm × 2 cm.[3]
- 10.Find the surface area of a cuboid 2 cm × 3 cm × 3 cm.[3]
- 11.Find the surface area of a cuboid 8 cm × 4 cm × 6 cm.[3]
- 12.Find the surface area of a cuboid 3 cm × 9 cm × 4 cm.[3]
Show answers and working
1. 32 cm³
Volume = length × width × height. 4 × 4 × 2 = 32 cm³.
2. 126 cm³
Volume = length × width × height. 3 × 7 × 6 = 126 cm³.
3. 80 cm³
Volume = length × width × height. 10 × 4 × 2 = 80 cm³.
4. 150 cm³
Volume = length × width × height. 3 × 10 × 5 = 150 cm³.
5. 200 cm³
Volume = length × width × height. 4 × 10 × 5 = 200 cm³.
6. 48 cm³
Volume = length × width × height. 6 × 4 × 2 = 48 cm³.
7. 160 cm³
Volume = length × width × height. 10 × 8 × 2 = 160 cm³.
8. 48 cm³
Volume = length × width × height. 3 × 2 × 8 = 48 cm³.
9. 212 cm²
Three pairs of faces: 72, 16, 18. 2 × (72 + 16 + 18) = 212 cm².
10. 42 cm²
Three pairs of faces: 6, 9, 6. 2 × (6 + 9 + 6) = 42 cm².
11. 208 cm²
Three pairs of faces: 32, 24, 48. 2 × (32 + 24 + 48) = 208 cm².
12. 150 cm²
Three pairs of faces: 27, 36, 12. 2 × (27 + 36 + 12) = 150 cm².
Worked examples
Find the volume of a cuboid 3 cm × 2 cm × 5 cm.
- Volume = length × width × height.
- 3 × 2 × 5 = 30 cm³.
- Answer: 30 cm³
Find the volume of a cuboid 7 cm × 2 cm × 2 cm.
- Volume = length × width × height.
- 7 × 2 × 2 = 28 cm³.
- Answer: 28 cm³
Find the surface area of a cuboid 3 cm × 4 cm × 3 cm.
- Three pairs of faces: 12, 12, 9.
- 2 × (12 + 12 + 9) = 66 cm².
- Answer: 66 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
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