Free Grade 3 Introducing Nets Common Errors Flashcards
Free Grade 3 flashcards for Introducing 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.
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25 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify introducing nets common errors
Identify introducing nets common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain introducing nets common errors
Explain introducing nets common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing nets common errors
Calculate introducing nets common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing nets common errors
Compare introducing 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 Introducing 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 2 cm × 6 cm × 3 cm.[1]
- 2.Find the volume of a cuboid 5 cm × 9 cm × 9 cm.[1]
- 3.Find the volume of a cuboid 2 cm × 7 cm × 2 cm.[1]
- 4.Find the volume of a cuboid 2 cm × 3 cm × 7 cm.[1]
- 5.Find the volume of a cuboid 10 cm × 9 cm × 10 cm.[2]
- 6.Find the volume of a cuboid 4 cm × 8 cm × 5 cm.[2]
- 7.Find the volume of a cuboid 3 cm × 10 cm × 2 cm.[2]
- 8.Find the volume of a cuboid 5 cm × 6 cm × 7 cm.[2]
- 9.Find the surface area of a cuboid 6 cm × 3 cm × 10 cm.[3]
- 10.Find the surface area of a cuboid 8 cm × 7 cm × 9 cm.[3]
- 11.Find the surface area of a cuboid 7 cm × 9 cm × 7 cm.[3]
- 12.Find the surface area of a cuboid 10 cm × 9 cm × 3 cm.[3]
Show answers and working
1. 36 cm³
Volume = length × width × height. 2 × 6 × 3 = 36 cm³.
2. 405 cm³
Volume = length × width × height. 5 × 9 × 9 = 405 cm³.
3. 28 cm³
Volume = length × width × height. 2 × 7 × 2 = 28 cm³.
4. 42 cm³
Volume = length × width × height. 2 × 3 × 7 = 42 cm³.
5. 900 cm³
Volume = length × width × height. 10 × 9 × 10 = 900 cm³.
6. 160 cm³
Volume = length × width × height. 4 × 8 × 5 = 160 cm³.
7. 60 cm³
Volume = length × width × height. 3 × 10 × 2 = 60 cm³.
8. 210 cm³
Volume = length × width × height. 5 × 6 × 7 = 210 cm³.
9. 216 cm²
Three pairs of faces: 18, 30, 60. 2 × (18 + 30 + 60) = 216 cm².
10. 382 cm²
Three pairs of faces: 56, 63, 72. 2 × (56 + 63 + 72) = 382 cm².
11. 350 cm²
Three pairs of faces: 63, 63, 49. 2 × (63 + 63 + 49) = 350 cm².
12. 294 cm²
Three pairs of faces: 90, 27, 30. 2 × (90 + 27 + 30) = 294 cm².
Worked examples
Find the volume of a cuboid 5 cm × 8 cm × 10 cm.
- Volume = length × width × height.
- 5 × 8 × 10 = 400 cm³.
- Answer: 400 cm³
Find the volume of a cuboid 7 cm × 8 cm × 9 cm.
- Volume = length × width × height.
- 7 × 8 × 9 = 504 cm³.
- Answer: 504 cm³
Find the surface area of a cuboid 3 cm × 6 cm × 3 cm.
- Three pairs of faces: 18, 18, 9.
- 2 × (18 + 18 + 9) = 90 cm².
- Answer: 90 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 Introducing 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 Introducing Nets Word Problems, Introducing Nets Techniques, Perimeter and Area. 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 Introducing Nets Common Errors?
- Move on to Working with Nets, Nets in Context, which build directly on this idea.
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