Free Grade 3 Metric Units in Context Lesson Plans
Free Grade 3 lesson plans for Metric Units in Context: 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
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify metric units in context
Identify metric units in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain metric units in context
Explain metric units in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate metric units in context
Calculate metric units in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare metric units in context
Compare metric units in context 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 in Context 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 4 L to mL.[1]
- 3.Convert 5 cm to mm.[1]
- 4.Convert 4 km to m.[1]
- 5.Convert 7.6 m to cm.[2]
- 6.Convert 9.8 L to mL.[2]
- 7.Convert 1.8 L to mL.[2]
- 8.Convert 6.6 km to m.[2]
- 9.Convert 2.5 cm to mm.[3]
- 10.Convert 6 m to cm.[3]
- 11.Convert 6.9 km to m.[3]
- 12.Convert 5.6 km to m.[3]
Show answers and working
1. 8000 mL
1 L = 1000 mL. 8 × 1000 = 8000 mL.
2. 4000 mL
1 L = 1000 mL. 4 × 1000 = 4000 mL.
3. 50 mm
1 cm = 10 mm. 5 × 10 = 50 mm.
4. 4000 m
1 km = 1000 m. 4 × 1000 = 4000 m.
5. 760 cm
1 m = 100 cm. 7.6 × 100 = 760 cm.
6. 9800 mL
1 L = 1000 mL. 9.8 × 1000 = 9800 mL.
7. 1800 mL
1 L = 1000 mL. 1.8 × 1000 = 1800 mL.
8. 6600 m
1 km = 1000 m. 6.6 × 1000 = 6600 m.
9. 25 mm
1 cm = 10 mm. 2.5 × 10 = 25 mm.
10. 600 cm
1 m = 100 cm. 6 × 100 = 600 cm.
11. 6900 m
1 km = 1000 m. 6.9 × 1000 = 6900 m.
12. 5600 m
1 km = 1000 m. 5.6 × 1000 = 5600 m.
Worked examples
Convert 9 km to m.
- 1 km = 1000 m.
- 9 × 1000 = 9000 m.
- Answer: 9000 m
Convert 3.4 L to mL.
- 1 L = 1000 mL.
- 3.4 × 1000 = 3400 mL.
- Answer: 3400 mL
Convert 9.8 kg to g.
- 1 kg = 1000 g.
- 9.8 × 1000 = 9800 g.
- Answer: 9800 g
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.
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Frequently asked
- Is this Grade 3 Metric Units in Context lesson plan really free?
- Yes. Every lesson plans 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 Metric Units, Introducing Metric Units, Geometry. Each one has its own free lesson, worksheet and quiz.
- How is the lesson plan 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 in Context?
- Move on to Imperial Units, Converting Units, Compound Units, which build directly on this idea.
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