Free Grade 3 Scalar Multiples in Context Lesson Plans
Free Grade 3 lesson plans for Scalar Multiples in Context: 12 real questions with a full answer key and worked solutions. Factors divide a number exactly; multiples are in its times table. The HCF is the biggest shared factor, the LCM the smallest shared multiple.
Free
Higher
15 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify scalar multiples in context
Identify scalar multiples in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain scalar multiples in context
Explain scalar multiples in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate scalar multiples in context
Calculate scalar multiples in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare scalar multiples in context
Compare scalar multiples 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 Scalar Multiples in Context works
Factors divide a number exactly; multiples are in its times table. The HCF is the biggest shared factor, the LCM the smallest shared multiple.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.List all the factors of 30.[1]
- 2.List all the factors of 20.[1]
- 3.List all the factors of 24.[1]
- 4.List all the factors of 36.[1]
- 5.Find the highest common factor (HCF) of 36 and 18.[2]
- 6.Find the highest common factor (HCF) of 10 and 4.[2]
- 7.Find the highest common factor (HCF) of 18 and 9.[2]
- 8.Find the highest common factor (HCF) of 12 and 8.[2]
- 9.Find the lowest common multiple (LCM) of 35 and 21.[3]
- 10.Find the lowest common multiple (LCM) of 10 and 30.[3]
- 11.Find the lowest common multiple (LCM) of 27 and 54.[3]
- 12.Find the lowest common multiple (LCM) of 25 and 15.[3]
Show answers and working
1. 1, 2, 3, 5, 6, 10, 15, 30
Find factor pairs that multiply to 30. 1 × 30 2 × 15 3 × 10 5 × 6
2. 1, 2, 4, 5, 10, 20
Find factor pairs that multiply to 20. 1 × 20 2 × 10 4 × 5
3. 1, 2, 3, 4, 6, 8, 12, 24
Find factor pairs that multiply to 24. 1 × 24 2 × 12 3 × 8 4 × 6
4. 1, 2, 3, 4, 6, 9, 12, 18, 36
Find factor pairs that multiply to 36. 1 × 36 2 × 18 3 × 12 4 × 9 6 × 6
5. 18
List factors of 36 and 18. The largest factor they share is 18.
6. 2
List factors of 10 and 4. The largest factor they share is 2.
7. 9
List factors of 18 and 9. The largest factor they share is 9.
8. 4
List factors of 12 and 8. The largest factor they share is 4.
9. 105
HCF(35, 21) = 7. LCM = 35 × 21 ÷ 7 = 105.
10. 30
HCF(10, 30) = 10. LCM = 10 × 30 ÷ 10 = 30.
11. 54
HCF(27, 54) = 27. LCM = 27 × 54 ÷ 27 = 54.
12. 75
HCF(25, 15) = 5. LCM = 25 × 15 ÷ 5 = 75.
Worked examples
List all the factors of 28.
- Find factor pairs that multiply to 28.
- 1 × 28
- 2 × 14
- 4 × 7
- Answer: 1, 2, 4, 7, 14, 28
Find the highest common factor (HCF) of 28 and 21.
- List factors of 28 and 21.
- The largest factor they share is 7.
- Answer: 7
Find the lowest common multiple (LCM) of 24 and 12.
- HCF(24, 12) = 12.
- LCM = 24 × 12 ÷ 12 = 24.
- Answer: 24
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Mixes up factors and multiples.
Correction: Factors are Few (they fit inside), multiples are Many (they go on forever).
Misses factor pairs.
Correction: Work through 1, 2, 3… in order until the pairs meet.
Teacher tips
- · Use factor rainbows to show pairs.
Parent tips
- · Ask how many ways 24 sweets can be put into equal bags.
Real-life applications
- · Arranging chairs in equal rows, syncing bus timetables (LCM).
Assessment objectives
How mastery is evidenced, and which standards it maps to.
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Frequently asked
- Is this Grade 3 Scalar Multiples 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 Scalar Multiples, Introducing Scalar Multiples, Adding Vectors. 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 Scalar Multiples in Context?
- Move on to Vector Notation, Adding Vectors, Magnitude of a Vector, which build directly on this idea.
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