Free Grade 3 Working with Compound Units Quizzes
Free Grade 3 quizzes for Working with Compound Units: 12 real questions with a full answer key and worked solutions. Metric units change by powers of 10: 10 mm in a cm, 100 cm in a m, 1000 m in a km. Multiply to convert to a smaller unit, divide to convert to a bigger one.
Free
Foundation
35 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain working with compound units
Explain working with compound units accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with compound units
Calculate working with compound units accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with compound units
Compare working with compound units accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify working with compound units
Justify working with compound units 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 Compound Units works
Metric units change by powers of 10: 10 mm in a cm, 100 cm in a m, 1000 m in a km. Multiply to convert to a smaller unit, divide to convert to a bigger one.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.Convert 8 cm to mm.[1]
- 2.Convert 8 L to mL.[1]
- 3.Convert 3 L to mL.[1]
- 4.Convert 6 m to cm.[1]
- 5.Convert 2.2 L to mL.[2]
- 6.Convert 2.9 km to m.[2]
- 7.Convert 6 km to m.[2]
- 8.Convert 9.4 cm to mm.[2]
- 9.Convert 9.3 cm to mm.[3]
- 10.Convert 1.8 kg to g.[3]
- 11.Convert 8.7 km to m.[3]
- 12.Convert 6.8 m to cm.[3]
Show answers and working
1. 80 mm
1 cm = 10 mm. 8 × 10 = 80 mm.
2. 8000 mL
1 L = 1000 mL. 8 × 1000 = 8000 mL.
3. 3000 mL
1 L = 1000 mL. 3 × 1000 = 3000 mL.
4. 600 cm
1 m = 100 cm. 6 × 100 = 600 cm.
5. 2200 mL
1 L = 1000 mL. 2.2 × 1000 = 2200 mL.
6. 2900 m
1 km = 1000 m. 2.9 × 1000 = 2900 m.
7. 6000 m
1 km = 1000 m. 6 × 1000 = 6000 m.
8. 94 mm
1 cm = 10 mm. 9.4 × 10 = 94 mm.
9. 93 mm
1 cm = 10 mm. 9.3 × 10 = 93 mm.
10. 1800 g
1 kg = 1000 g. 1.8 × 1000 = 1800 g.
11. 8700 m
1 km = 1000 m. 8.7 × 1000 = 8700 m.
12. 680 cm
1 m = 100 cm. 6.8 × 100 = 680 cm.
Worked examples
Convert 7 m to cm.
- 1 m = 100 cm.
- 7 × 100 = 700 cm.
- Answer: 700 cm
Convert 4.1 m to cm.
- 1 m = 100 cm.
- 4.1 × 100 = 410 cm.
- Answer: 410 cm
Convert 1.4 cm to mm.
- 1 cm = 10 mm.
- 1.4 × 10 = 14 mm.
- Answer: 14 mm
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Divides when converting to a smaller unit.
Correction: Smaller units mean more of them — multiply.
Uses 100 for every conversion.
Correction: Learn which pairs use 10, 100 or 1000.
Teacher tips
- · Keep a conversion staircase on the wall.
Parent tips
- · Weigh fruit at the shop and convert kg to g.
Real-life applications
- · Cooking, measuring height, reading road signs.
Assessment objectives
How mastery is evidenced, and which standards it maps to.
Every free resource for Working with Compound Units
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Frequently asked
- Is this Grade 3 Working with Compound Units quiz really free?
- Yes. Every quizzes 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 Compound Units, Converting Units. Each one has its own free lesson, worksheet and quiz.
- How is the quiz 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 Compound Units?
- Move on to Compound Units in Context, Metric Units, Imperial Units, Converting Units, which build directly on this idea.
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