Free Grade 3 Introducing Integer Number Line Flashcards
Free Grade 3 flashcards for Introducing Integer Number Line: 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
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain introducing integer number line
Explain introducing integer number line accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing integer number line
Calculate introducing integer number line accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing integer number line
Compare introducing integer number line accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify introducing integer number line
Justify introducing integer number line 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 Integer Number Line 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 + 10 = ?[1]
- 2.4 − (-3) = ?[1]
- 3.7 + (-6) = ?[1]
- 4.-1 − 7 = ?[1]
- 5.16 × (-11) = ?[2]
- 6.12 × 13 = ?[2]
- 7.-11 − 13 = ?[2]
- 8.20 × (-15) = ?[2]
- 9.-18 × (-15) = ?[3]
- 10.-22 + (-16) = ?[3]
- 11.18 + (-12) = ?[3]
- 12.-18 + 2 = ?[3]
Show answers and working
1. 18
Start at 8 on a number line. Move 10 right. You land on 18.
2. 7
Subtracting (-3) is the same as adding 3. 4 + 3 = 7
3. 1
Start at 7 on a number line. Move 6 left. You land on 1.
4. -8
Subtracting 7 is the same as adding -7. -1 + (-7) = -8
5. -176
Multiply the sizes: 16 × 11 = 176. Same signs give positive, different signs give negative. Answer: -176
6. 156
Multiply the sizes: 12 × 13 = 156. Same signs give positive, different signs give negative. Answer: 156
7. -24
Subtracting 13 is the same as adding -13. -11 + (-13) = -24
8. -300
Multiply the sizes: 20 × 15 = 300. Same signs give positive, different signs give negative. Answer: -300
9. 270
Multiply the sizes: 18 × 15 = 270. Same signs give positive, different signs give negative. Answer: 270
10. -38
Start at -22 on a number line. Move 16 left. You land on -38.
11. 6
Start at 18 on a number line. Move 12 left. You land on 6.
12. -16
Start at -18 on a number line. Move 2 right. You land on -16.
Worked examples
3 + (-6) = ?
- Start at 3 on a number line.
- Move 6 left.
- You land on -3.
- Answer: -3
-15 + (-18) = ?
- Start at -15 on a number line.
- Move 18 left.
- You land on -33.
- Answer: -33
-8 × 7 = ?
- Multiply the sizes: 8 × 7 = 56.
- Same signs give positive, different signs give negative.
- Answer: -56
- Answer: -56
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.
Every free resource for Introducing Integer Number Line
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Frequently asked
- Is this Grade 3 Introducing Integer Number Line flashcards really free?
- Yes. Every flashcards 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 Negative Numbers. Each one has its own free lesson, worksheet and quiz.
- How is the flashcards 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 Integer Number Line?
- Move on to Working with Integer Number Line, Integer Number Line in Context, Negative Numbers, Adding Integers, which build directly on this idea.
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