Free Grade 3 Metric Units Quizzes
Free Grade 3 quizzes for Metric 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 metric units
Explain metric units accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate metric units
Calculate metric units accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare metric units
Compare metric units accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify metric units
Justify metric 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 Metric 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 L to mL.[1]
- 2.Convert 3 cm to mm.[1]
- 3.Convert 6 m to cm.[1]
- 4.Convert 5 km to m.[1]
- 5.Convert 2.2 cm to mm.[2]
- 6.Convert 3.9 L to mL.[2]
- 7.Convert 7.9 m to cm.[2]
- 8.Convert 2 L to mL.[2]
- 9.Convert 7.7 L to mL.[3]
- 10.Convert 7.6 km to m.[3]
- 11.Convert 7.7 kg to g.[3]
- 12.Convert 5.3 km to m.[3]
Show answers and working
1. 8000 mL
1 L = 1000 mL. 8 × 1000 = 8000 mL.
2. 30 mm
1 cm = 10 mm. 3 × 10 = 30 mm.
3. 600 cm
1 m = 100 cm. 6 × 100 = 600 cm.
4. 5000 m
1 km = 1000 m. 5 × 1000 = 5000 m.
5. 22 mm
1 cm = 10 mm. 2.2 × 10 = 22 mm.
6. 3900 mL
1 L = 1000 mL. 3.9 × 1000 = 3900 mL.
7. 790 cm
1 m = 100 cm. 7.9 × 100 = 790 cm.
8. 2000 mL
1 L = 1000 mL. 2 × 1000 = 2000 mL.
9. 7700 mL
1 L = 1000 mL. 7.7 × 1000 = 7700 mL.
10. 7600 m
1 km = 1000 m. 7.6 × 1000 = 7600 m.
11. 7700 g
1 kg = 1000 g. 7.7 × 1000 = 7700 g.
12. 5300 m
1 km = 1000 m. 5.3 × 1000 = 5300 m.
Worked examples
Convert 2 cm to mm.
- 1 cm = 10 mm.
- 2 × 10 = 20 mm.
- Answer: 20 mm
Convert 6.4 m to cm.
- 1 m = 100 cm.
- 6.4 × 100 = 640 cm.
- Answer: 640 cm
Convert 4.4 cm to mm.
- 1 cm = 10 mm.
- 4.4 × 10 = 44 mm.
- Answer: 44 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 Metric Units
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Learn — Meet the idea.
Practice — Build fluency.
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Assess — Prove mastery.
Apply — Use it in context.
Teach — Deliver it to a class.
Frequently asked
- Is this Grade 3 Metric 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 Geometry. 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 Metric Units?
- Move on to Imperial Units, Converting Units, Compound Units, Time, which build directly on this idea.
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