Free Grade 3 Integers Lesson Plans
Free Grade 3 lesson plans for Integers: 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
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify integers
Identify integers accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain integers
Explain integers accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate integers
Calculate integers accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare integers
Compare integers 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 Integers 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.-10 + 5 = ?[1]
- 2.-2 − (-10) = ?[1]
- 3.-8 + (-3) = ?[1]
- 4.9 − (-7) = ?[1]
- 5.18 + 17 = ?[2]
- 6.-10 × 14 = ?[2]
- 7.0 − (-1) = ?[2]
- 8.4 + (-12) = ?[2]
- 9.-11 × (-23) = ?[3]
- 10.-4 × 2 = ?[3]
- 11.-2 + 15 = ?[3]
- 12.17 × (-25) = ?[3]
Show answers and working
1. -5
Start at -10 on a number line. Move 5 right. You land on -5.
2. 8
Subtracting (-10) is the same as adding 10. -2 + 10 = 8
3. -11
Start at -8 on a number line. Move 3 left. You land on -11.
4. 16
Subtracting (-7) is the same as adding 7. 9 + 7 = 16
5. 35
Start at 18 on a number line. Move 17 right. You land on 35.
6. -140
Multiply the sizes: 10 × 14 = 140. Same signs give positive, different signs give negative. Answer: -140
7. 1
Subtracting (-1) is the same as adding 1. 0 + 1 = 1
8. -8
Start at 4 on a number line. Move 12 left. You land on -8.
9. 253
Multiply the sizes: 11 × 23 = 253. Same signs give positive, different signs give negative. Answer: 253
10. -8
Multiply the sizes: 4 × 2 = 8. Same signs give positive, different signs give negative. Answer: -8
11. 13
Start at -2 on a number line. Move 15 right. You land on 13.
12. -425
Multiply the sizes: 17 × 25 = 425. Same signs give positive, different signs give negative. Answer: -425
Worked examples
-6 + (-9) = ?
- Start at -6 on a number line.
- Move 9 left.
- You land on -15.
- Answer: -15
6 × (-7) = ?
- Multiply the sizes: 6 × 7 = 42.
- Same signs give positive, different signs give negative.
- Answer: -42
- Answer: -42
-3 − 15 = ?
- Subtracting 15 is the same as adding -15.
- -3 + (-15) = -18
- Answer: -18
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 Integers
One concept, one ecosystem — all of it free.
Goes deeper
The entities below this one, each with the same complete free resource set.
Sibling concepts
Related concepts
Lateral links, including across subjects.
Next topics
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Every kind below is a real page, generated from this entity.
Learn — Meet the idea.
Practice — Build fluency.
Revise — Keep it in memory.
Assess — Prove mastery.
Apply — Use it in context.
Teach — Deliver it to a class.
Frequently asked
- Is this Grade 3 Integers 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 Number Formation, Number Recognition. 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 Integers?
- Move on to Fractions, Decimals, Percentages, Rational Numbers, which build directly on this idea.
Related resources
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