Free Grade 3 Introducing Negative Numbers Techniques Lesson Plans
Free Grade 3 lesson plans for Introducing Negative Numbers Techniques: 12 real questions with a full answer key and worked solutions. Integers include negative numbers. On a number line, adding moves right and subtracting moves left. Subtracting a negative is the same as adding.
Free
Stretch
15 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain introducing negative numbers techniques
Explain introducing negative numbers techniques accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing negative numbers techniques
Calculate introducing negative numbers techniques accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing negative numbers techniques
Compare introducing negative numbers techniques accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify introducing negative numbers techniques
Justify introducing negative numbers techniques 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 Introducing Negative Numbers Techniques works
Integers include negative numbers. On a number line, adding moves right and subtracting moves left. Subtracting a negative is the same as adding.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.8 − 1 = ?[1]
- 2.-9 − (-3) = ?[1]
- 3.7 + 2 = ?[1]
- 4.3 + (-5) = ?[1]
- 5.-13 × 16 = ?[2]
- 6.5 × 16 = ?[2]
- 7.18 × (-10) = ?[2]
- 8.4 + (-2) = ?[2]
- 9.14 + 17 = ?[3]
- 10.-15 − (-27) = ?[3]
- 11.-11 − (-20) = ?[3]
- 12.-18 × (-5) = ?[3]
Show answers and working
1. 7
Subtracting 1 is the same as adding -1. 8 + (-1) = 7
2. -6
Subtracting (-3) is the same as adding 3. -9 + 3 = -6
3. 9
Start at 7 on a number line. Move 2 right. You land on 9.
4. -2
Start at 3 on a number line. Move 5 left. You land on -2.
5. -208
Multiply the sizes: 13 × 16 = 208. Same signs give positive, different signs give negative. Answer: -208
6. 80
Multiply the sizes: 5 × 16 = 80. Same signs give positive, different signs give negative. Answer: 80
7. -180
Multiply the sizes: 18 × 10 = 180. Same signs give positive, different signs give negative. Answer: -180
8. 2
Start at 4 on a number line. Move 2 left. You land on 2.
9. 31
Start at 14 on a number line. Move 17 right. You land on 31.
10. 12
Subtracting (-27) is the same as adding 27. -15 + 27 = 12
11. 9
Subtracting (-20) is the same as adding 20. -11 + 20 = 9
12. 90
Multiply the sizes: 18 × 5 = 90. Same signs give positive, different signs give negative. Answer: 90
Worked examples
6 − (-5) = ?
- Subtracting (-5) is the same as adding 5.
- 6 + 5 = 11
- Answer: 11
15 + 14 = ?
- Start at 15 on a number line.
- Move 14 right.
- You land on 29.
- Answer: 29
3 + 0 = ?
- Start at 3 on a number line.
- Move 0 right.
- You land on 3.
- Answer: 3
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Thinks −8 is bigger than −3.
Correction: Further left on the number line means smaller.
Treats − (−4) as −4.
Correction: Two minus signs together become a plus.
Teacher tips
- · Use a vertical number line like a thermometer.
Parent tips
- · Compare winter temperatures from the weather forecast.
Real-life applications
- · Temperatures below zero, bank balances, floors below ground.
Assessment objectives
How mastery is evidenced, and which standards it maps to.
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Frequently asked
- Is this Grade 3 Introducing Negative Numbers Techniques 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 Introducing Negative Numbers Essentials, Number Formation. 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 Introducing Negative Numbers Techniques?
- Move on to Introducing Negative Numbers Word Problems, Introducing Negative Numbers Common Errors, Working with Negative Numbers, Negative Numbers in Context, which build directly on this idea.
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