Free Grade 3 Introducing Absolute Value Common Errors Lesson Plans
Free Grade 3 lesson plans for Introducing Absolute Value 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
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify introducing absolute value common errors
Identify introducing absolute value common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain introducing absolute value common errors
Explain introducing absolute value common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing absolute value common errors
Calculate introducing absolute value common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing absolute value common errors
Compare introducing absolute value 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 Introducing Absolute Value 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.-2 + 4 = ?[1]
- 2.10 − (-2) = ?[1]
- 3.-7 − (-3) = ?[1]
- 4.-9 − (-8) = ?[1]
- 5.12 + 18 = ?[2]
- 6.-14 − (-9) = ?[2]
- 7.-5 − 9 = ?[2]
- 8.-16 × 9 = ?[2]
- 9.-1 − 18 = ?[3]
- 10.23 − 10 = ?[3]
- 11.-17 × 11 = ?[3]
- 12.-2 × 29 = ?[3]
Show answers and working
1. 2
Start at -2 on a number line. Move 4 right. You land on 2.
2. 12
Subtracting (-2) is the same as adding 2. 10 + 2 = 12
3. -4
Subtracting (-3) is the same as adding 3. -7 + 3 = -4
4. -1
Subtracting (-8) is the same as adding 8. -9 + 8 = -1
5. 30
Start at 12 on a number line. Move 18 right. You land on 30.
6. -5
Subtracting (-9) is the same as adding 9. -14 + 9 = -5
7. -14
Subtracting 9 is the same as adding -9. -5 + (-9) = -14
8. -144
Multiply the sizes: 16 × 9 = 144. Same signs give positive, different signs give negative. Answer: -144
9. -19
Subtracting 18 is the same as adding -18. -1 + (-18) = -19
10. 13
Subtracting 10 is the same as adding -10. 23 + (-10) = 13
11. -187
Multiply the sizes: 17 × 11 = 187. Same signs give positive, different signs give negative. Answer: -187
12. -58
Multiply the sizes: 2 × 29 = 58. Same signs give positive, different signs give negative. Answer: -58
Worked examples
-10 + (-9) = ?
- Start at -10 on a number line.
- Move 9 left.
- You land on -19.
- Answer: -19
-8 − (-7) = ?
- Subtracting (-7) is the same as adding 7.
- -8 + 7 = -1
- Answer: -1
9 − 8 = ?
- Subtracting 8 is the same as adding -8.
- 9 + (-8) = 1
- Answer: 1
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 Absolute Value 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 Introducing Absolute Value Word Problems, Introducing Absolute Value Techniques, Multiplying Integers. 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 Absolute Value Common Errors?
- Move on to Working with Absolute Value, Absolute Value in Context, which build directly on this idea.
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