Free Grade 3 Nets Lessons
Free Grade 3 lessons for Nets: 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
Foundation
25 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify nets
Identify nets accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain nets
Explain nets accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate nets
Calculate nets accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare nets
Compare nets 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 Nets 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 10 cm × 9 cm × 8 cm.[1]
- 2.Find the volume of a cuboid 3 cm × 9 cm × 7 cm.[1]
- 3.Find the volume of a cuboid 4 cm × 4 cm × 4 cm.[1]
- 4.Find the volume of a cuboid 8 cm × 8 cm × 7 cm.[1]
- 5.Find the volume of a cuboid 7 cm × 8 cm × 8 cm.[2]
- 6.Find the volume of a cuboid 5 cm × 9 cm × 3 cm.[2]
- 7.Find the volume of a cuboid 5 cm × 7 cm × 6 cm.[2]
- 8.Find the volume of a cuboid 9 cm × 7 cm × 7 cm.[2]
- 9.Find the surface area of a cuboid 9 cm × 4 cm × 3 cm.[3]
- 10.Find the surface area of a cuboid 7 cm × 8 cm × 2 cm.[3]
- 11.Find the surface area of a cuboid 2 cm × 5 cm × 6 cm.[3]
- 12.Find the surface area of a cuboid 6 cm × 6 cm × 3 cm.[3]
Show answers and working
1. 720 cm³
Volume = length × width × height. 10 × 9 × 8 = 720 cm³.
2. 189 cm³
Volume = length × width × height. 3 × 9 × 7 = 189 cm³.
3. 64 cm³
Volume = length × width × height. 4 × 4 × 4 = 64 cm³.
4. 448 cm³
Volume = length × width × height. 8 × 8 × 7 = 448 cm³.
5. 448 cm³
Volume = length × width × height. 7 × 8 × 8 = 448 cm³.
6. 135 cm³
Volume = length × width × height. 5 × 9 × 3 = 135 cm³.
7. 210 cm³
Volume = length × width × height. 5 × 7 × 6 = 210 cm³.
8. 441 cm³
Volume = length × width × height. 9 × 7 × 7 = 441 cm³.
9. 150 cm²
Three pairs of faces: 36, 12, 27. 2 × (36 + 12 + 27) = 150 cm².
10. 172 cm²
Three pairs of faces: 56, 16, 14. 2 × (56 + 16 + 14) = 172 cm².
11. 104 cm²
Three pairs of faces: 10, 30, 12. 2 × (10 + 30 + 12) = 104 cm².
12. 144 cm²
Three pairs of faces: 36, 18, 18. 2 × (36 + 18 + 18) = 144 cm².
Worked examples
Find the volume of a cuboid 6 cm × 10 cm × 6 cm.
- Volume = length × width × height.
- 6 × 10 × 6 = 360 cm³.
- Answer: 360 cm³
Find the volume of a cuboid 2 cm × 10 cm × 2 cm.
- Volume = length × width × height.
- 2 × 10 × 2 = 40 cm³.
- Answer: 40 cm³
Find the surface area of a cuboid 10 cm × 6 cm × 4 cm.
- Three pairs of faces: 60, 24, 40.
- 2 × (60 + 24 + 40) = 248 cm².
- Answer: 248 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.
Every free resource for Nets
One concept, one ecosystem — all of it free.
Goes deeper
The entities below this one, each with the same complete free resource set.
Sibling concepts
Related concepts
Lateral links, including across subjects.
Next topics
All free formats for this concept
Every kind below is a real page, generated from this entity.
Learn — Meet the idea.
Practice — Build fluency.
Revise — Keep it in memory.
Assess — Prove mastery.
Apply — Use it in context.
Teach — Deliver it to a class.
Frequently asked
- Is this Grade 3 Nets lesson really free?
- Yes. Every lessons 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 Perimeter and Area. Each one has its own free lesson, worksheet and quiz.
- How is the lesson 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 Nets?
- Move on to Surface Area, Volume of Prisms, Volume of Cylinders, Volume of Spheres, which build directly on this idea.
Related resources
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