Free Grade 3 Compound Units in Context Lessons
Free Grade 3 lessons for Compound 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
15 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify compound units in context
Identify compound units in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain compound units in context
Explain compound units in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate compound units in context
Calculate compound units in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare compound units in context
Compare compound 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 Compound 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 2 km to m.[1]
- 2.Convert 9 cm to mm.[1]
- 3.Convert 4 km to m.[1]
- 4.Convert 3 L to mL.[1]
- 5.Convert 9.3 kg to g.[2]
- 6.Convert 6.3 m to cm.[2]
- 7.Convert 7.2 L to mL.[2]
- 8.Convert 4.3 m to cm.[2]
- 9.Convert 7.3 kg to g.[3]
- 10.Convert 5.5 kg to g.[3]
- 11.Convert 6.1 L to mL.[3]
- 12.Convert 6 km to m.[3]
Show answers and working
1. 2000 m
1 km = 1000 m. 2 × 1000 = 2000 m.
2. 90 mm
1 cm = 10 mm. 9 × 10 = 90 mm.
3. 4000 m
1 km = 1000 m. 4 × 1000 = 4000 m.
4. 3000 mL
1 L = 1000 mL. 3 × 1000 = 3000 mL.
5. 9300 g
1 kg = 1000 g. 9.3 × 1000 = 9300 g.
6. 630 cm
1 m = 100 cm. 6.3 × 100 = 630 cm.
7. 7200 mL
1 L = 1000 mL. 7.2 × 1000 = 7200 mL.
8. 430 cm
1 m = 100 cm. 4.3 × 100 = 430 cm.
9. 7300 g
1 kg = 1000 g. 7.3 × 1000 = 7300 g.
10. 5500 g
1 kg = 1000 g. 5.5 × 1000 = 5500 g.
11. 6100 mL
1 L = 1000 mL. 6.1 × 1000 = 6100 mL.
12. 6000 m
1 km = 1000 m. 6 × 1000 = 6000 m.
Worked examples
Convert 7 km to m.
- 1 km = 1000 m.
- 7 × 1000 = 7000 m.
- Answer: 7000 m
Convert 2.3 L to mL.
- 1 L = 1000 mL.
- 2.3 × 1000 = 2300 mL.
- Answer: 2300 mL
Convert 4.2 m to cm.
- 1 m = 100 cm.
- 4.2 × 100 = 420 cm.
- Answer: 420 cm
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 Compound Units in Context
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 Compound Units in Context 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 Working with Compound Units, Introducing Compound Units, Converting Units. 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 Compound Units in Context?
- Move on to Metric Units, Imperial Units, Converting Units, which build directly on this idea.
Related resources
Stuck on Compound Units in Context? The AI Tutor already knows this page, its prerequisites and its common mistakes.
Open the free AI Tutor