Free Grade 3 Adding Integers in Context Lesson Plans
Free Grade 3 lesson plans for Adding Integers in Context: 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
Higher
35 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify adding integers in context
Identify adding integers in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain adding integers in context
Explain adding integers in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate adding integers in context
Calculate adding integers in context accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare adding integers in context
Compare adding integers 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 Adding Integers in Context 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.
- 1.2 − 9 = ?[1]
- 2.9 + (-2) = ?[1]
- 3.-3 + 1 = ?[1]
- 4.-9 − (-1) = ?[1]
- 5.8 − 2 = ?[2]
- 6.-14 − (-19) = ?[2]
- 7.10 × 15 = ?[2]
- 8.14 − 2 = ?[2]
- 9.2 × (-14) = ?[3]
- 10.23 + 26 = ?[3]
- 11.-24 × (-27) = ?[3]
- 12.23 × (-26) = ?[3]
Show answers and working
1. -7
Subtracting 9 is the same as adding -9. 2 + (-9) = -7
2. 7
Start at 9 on a number line. Move 2 left. You land on 7.
3. -2
Start at -3 on a number line. Move 1 right. You land on -2.
4. -8
Subtracting (-1) is the same as adding 1. -9 + 1 = -8
5. 6
Subtracting 2 is the same as adding -2. 8 + (-2) = 6
6. 5
Subtracting (-19) is the same as adding 19. -14 + 19 = 5
7. 150
Multiply the sizes: 10 × 15 = 150. Same signs give positive, different signs give negative. Answer: 150
8. 12
Subtracting 2 is the same as adding -2. 14 + (-2) = 12
9. -28
Multiply the sizes: 2 × 14 = 28. Same signs give positive, different signs give negative. Answer: -28
10. 49
Start at 23 on a number line. Move 26 right. You land on 49.
11. 648
Multiply the sizes: 24 × 27 = 648. Same signs give positive, different signs give negative. Answer: 648
12. -598
Multiply the sizes: 23 × 26 = 598. Same signs give positive, different signs give negative. Answer: -598
Worked examples
10 + (-1) = ?
- Start at 10 on a number line.
- Move 1 left.
- You land on 9.
- Answer: 9
-16 × 7 = ?
- Multiply the sizes: 16 × 7 = 112.
- Same signs give positive, different signs give negative.
- Answer: -112
- Answer: -112
11 + 18 = ?
- Start at 11 on a number line.
- Move 18 right.
- You land on 29.
- Answer: 29
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 Adding Integers 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 Adding Integers, Introducing Adding Integers, 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 Adding Integers in Context?
- Move on to Negative Numbers, Integer Number Line, Subtracting Integers, Multiplying Integers, which build directly on this idea.
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