Free Grade 3 Integer Number Line in Context Common Errors Lesson Plans
Free Grade 3 lesson plans for Integer Number Line in Context Common Errors: 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
Foundation
15 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify integer number line in context common errors
Identify integer number line in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain integer number line in context common errors
Explain integer number line in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate integer number line in context common errors
Calculate integer number line in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare integer number line in context common errors
Compare integer number line in context common errors 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 Integer Number Line in Context Common Errors 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.
- 1.6 − 1 = ?[1]
- 2.6 + (-4) = ?[1]
- 3.0 − 4 = ?[1]
- 4.5 − 7 = ?[1]
- 5.-20 × 11 = ?[2]
- 6.-8 − 19 = ?[2]
- 7.13 + (-8) = ?[2]
- 8.7 − (-15) = ?[2]
- 9.-6 − (-27) = ?[3]
- 10.-22 + (-5) = ?[3]
- 11.10 × (-6) = ?[3]
- 12.-6 − 0 = ?[3]
Show answers and working
1. 5
Subtracting 1 is the same as adding -1. 6 + (-1) = 5
2. 2
Start at 6 on a number line. Move 4 left. You land on 2.
3. -4
Subtracting 4 is the same as adding -4. 0 + (-4) = -4
4. -2
Subtracting 7 is the same as adding -7. 5 + (-7) = -2
5. -220
Multiply the sizes: 20 × 11 = 220. Same signs give positive, different signs give negative. Answer: -220
6. -27
Subtracting 19 is the same as adding -19. -8 + (-19) = -27
7. 5
Start at 13 on a number line. Move 8 left. You land on 5.
8. 22
Subtracting (-15) is the same as adding 15. 7 + 15 = 22
9. 21
Subtracting (-27) is the same as adding 27. -6 + 27 = 21
10. -27
Start at -22 on a number line. Move 5 left. You land on -27.
11. -60
Multiply the sizes: 10 × 6 = 60. Same signs give positive, different signs give negative. Answer: -60
12. -6
Subtracting 0 is the same as adding 0. -6 + 0 = -6
Worked examples
-3 + 3 = ?
- Start at -3 on a number line.
- Move 3 right.
- You land on 0.
- Answer: 0
-1 × (-5) = ?
- Multiply the sizes: 1 × 5 = 5.
- Same signs give positive, different signs give negative.
- Answer: 5
- Answer: 5
-23 + 26 = ?
- Start at -23 on a number line.
- Move 26 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 Integer Number Line in Context Common Errors 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 Integer Number Line in Context Word Problems, Integer Number Line in Context Techniques, Working with Integer Number Line. 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 Integer Number Line in Context Common Errors?
- Move on to Introducing Integer Number Line, Working with Integer Number Line, which build directly on this idea.
Related resources
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