Free Grade 3 Working with Nets Common Errors Flashcards
Free Grade 3 flashcards for Working with Nets 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.
- RememberIdentify working with nets common errors
Identify working with nets common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with nets common errors
Explain working with nets common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with nets common errors
Calculate working with nets common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with nets common errors
Compare working with nets 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 Working with Nets 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 5 cm × 2 cm × 8 cm.[1]
- 2.Find the volume of a cuboid 6 cm × 8 cm × 5 cm.[1]
- 3.Find the volume of a cuboid 2 cm × 10 cm × 3 cm.[1]
- 4.Find the volume of a cuboid 8 cm × 3 cm × 3 cm.[1]
- 5.Find the volume of a cuboid 5 cm × 8 cm × 7 cm.[2]
- 6.Find the volume of a cuboid 5 cm × 5 cm × 9 cm.[2]
- 7.Find the volume of a cuboid 3 cm × 2 cm × 4 cm.[2]
- 8.Find the volume of a cuboid 10 cm × 3 cm × 6 cm.[2]
- 9.Find the surface area of a cuboid 8 cm × 6 cm × 4 cm.[3]
- 10.Find the surface area of a cuboid 2 cm × 3 cm × 8 cm.[3]
- 11.Find the surface area of a cuboid 9 cm × 10 cm × 10 cm.[3]
- 12.Find the surface area of a cuboid 10 cm × 8 cm × 9 cm.[3]
Show answers and working
1. 80 cm³
Volume = length × width × height. 5 × 2 × 8 = 80 cm³.
2. 240 cm³
Volume = length × width × height. 6 × 8 × 5 = 240 cm³.
3. 60 cm³
Volume = length × width × height. 2 × 10 × 3 = 60 cm³.
4. 72 cm³
Volume = length × width × height. 8 × 3 × 3 = 72 cm³.
5. 280 cm³
Volume = length × width × height. 5 × 8 × 7 = 280 cm³.
6. 225 cm³
Volume = length × width × height. 5 × 5 × 9 = 225 cm³.
7. 24 cm³
Volume = length × width × height. 3 × 2 × 4 = 24 cm³.
8. 180 cm³
Volume = length × width × height. 10 × 3 × 6 = 180 cm³.
9. 208 cm²
Three pairs of faces: 48, 24, 32. 2 × (48 + 24 + 32) = 208 cm².
10. 92 cm²
Three pairs of faces: 6, 24, 16. 2 × (6 + 24 + 16) = 92 cm².
11. 560 cm²
Three pairs of faces: 90, 100, 90. 2 × (90 + 100 + 90) = 560 cm².
12. 484 cm²
Three pairs of faces: 80, 72, 90. 2 × (80 + 72 + 90) = 484 cm².
Worked examples
Find the volume of a cuboid 8 cm × 10 cm × 4 cm.
- Volume = length × width × height.
- 8 × 10 × 4 = 320 cm³.
- Answer: 320 cm³
Find the volume of a cuboid 7 cm × 3 cm × 9 cm.
- Volume = length × width × height.
- 7 × 3 × 9 = 189 cm³.
- Answer: 189 cm³
Find the surface area of a cuboid 3 cm × 7 cm × 9 cm.
- Three pairs of faces: 21, 63, 27.
- 2 × (21 + 63 + 27) = 222 cm².
- Answer: 222 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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Frequently asked
- Is this Grade 3 Working with Nets Common Errors flashcards really free?
- Yes. Every flashcards 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 Working with Nets Word Problems, Working with Nets Techniques, Introducing Nets. Each one has its own free lesson, worksheet and quiz.
- How is the flashcards 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 Working with Nets Common Errors?
- Move on to Introducing Nets, Nets in Context, which build directly on this idea.
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