Free Grade 3 Imperial Units in Context Lesson Plans
Free Grade 3 lesson plans for Imperial 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
Higher
35 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify imperial units in context
Identify imperial units in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain imperial units in context
Explain imperial units in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate imperial units in context
Calculate imperial units in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare imperial units in context
Compare imperial 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 Imperial 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 5 m to cm.[1]
- 2.Convert 3 m to cm.[1]
- 3.Convert 9 cm to mm.[1]
- 4.Convert 9 kg to g.[1]
- 5.Convert 2.1 cm to mm.[2]
- 6.Convert 9.2 m to cm.[2]
- 7.Convert 9.6 cm to mm.[2]
- 8.Convert 2.9 L to mL.[2]
- 9.Convert 1.7 km to m.[3]
- 10.Convert 5.3 cm to mm.[3]
- 11.Convert 6.6 L to mL.[3]
- 12.Convert 7.4 cm to mm.[3]
Show answers and working
1. 500 cm
1 m = 100 cm. 5 × 100 = 500 cm.
2. 300 cm
1 m = 100 cm. 3 × 100 = 300 cm.
3. 90 mm
1 cm = 10 mm. 9 × 10 = 90 mm.
4. 9000 g
1 kg = 1000 g. 9 × 1000 = 9000 g.
5. 21 mm
1 cm = 10 mm. 2.1 × 10 = 21 mm.
6. 920 cm
1 m = 100 cm. 9.2 × 100 = 920 cm.
7. 96 mm
1 cm = 10 mm. 9.6 × 10 = 96 mm.
8. 2900 mL
1 L = 1000 mL. 2.9 × 1000 = 2900 mL.
9. 1700 m
1 km = 1000 m. 1.7 × 1000 = 1700 m.
10. 53 mm
1 cm = 10 mm. 5.3 × 10 = 53 mm.
11. 6600 mL
1 L = 1000 mL. 6.6 × 1000 = 6600 mL.
12. 74 mm
1 cm = 10 mm. 7.4 × 10 = 74 mm.
Worked examples
Convert 7 L to mL.
- 1 L = 1000 mL.
- 7 × 1000 = 7000 mL.
- Answer: 7000 mL
Convert 6.4 km to m.
- 1 km = 1000 m.
- 6.4 × 1000 = 6400 m.
- Answer: 6400 m
Convert 8.6 km to m.
- 1 km = 1000 m.
- 8.6 × 1000 = 8600 m.
- Answer: 8600 m
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 Imperial 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 Imperial Units, Introducing Imperial Units, Metric Units. 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 Imperial Units in Context?
- Move on to Metric Units, Converting Units, Compound Units, which build directly on this idea.
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