Free Grade 3 Working with Introducing Absolute Value Common Errors Lessons
Free Grade 3 lessons for Working with 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
35 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with introducing absolute value common errors
Identify working with introducing absolute value common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with introducing absolute value common errors
Explain working with introducing absolute value common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing absolute value common errors
Calculate working with introducing absolute value common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing absolute value common errors
Compare working with 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 Working with 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.-1 − (-3) = ?[1]
- 2.7 + 7 = ?[1]
- 3.-7 − (-3) = ?[1]
- 4.6 + (-7) = ?[1]
- 5.-17 × 18 = ?[2]
- 6.-10 − (-17) = ?[2]
- 7.16 × (-6) = ?[2]
- 8.16 × 16 = ?[2]
- 9.-17 + (-18) = ?[3]
- 10.-10 × (-16) = ?[3]
- 11.15 + 5 = ?[3]
- 12.-23 − 20 = ?[3]
Show answers and working
1. 2
Subtracting (-3) is the same as adding 3. -1 + 3 = 2
2. 14
Start at 7 on a number line. Move 7 right. You land on 14.
3. -4
Subtracting (-3) is the same as adding 3. -7 + 3 = -4
4. -1
Start at 6 on a number line. Move 7 left. You land on -1.
5. -306
Multiply the sizes: 17 × 18 = 306. Same signs give positive, different signs give negative. Answer: -306
6. 7
Subtracting (-17) is the same as adding 17. -10 + 17 = 7
7. -96
Multiply the sizes: 16 × 6 = 96. Same signs give positive, different signs give negative. Answer: -96
8. 256
Multiply the sizes: 16 × 16 = 256. Same signs give positive, different signs give negative. Answer: 256
9. -35
Start at -17 on a number line. Move 18 left. You land on -35.
10. 160
Multiply the sizes: 10 × 16 = 160. Same signs give positive, different signs give negative. Answer: 160
11. 20
Start at 15 on a number line. Move 5 right. You land on 20.
12. -43
Subtracting 20 is the same as adding -20. -23 + (-20) = -43
Worked examples
-8 + (-8) = ?
- Start at -8 on a number line.
- Move 8 left.
- You land on -16.
- Answer: -16
12 + (-17) = ?
- Start at 12 on a number line.
- Move 17 left.
- You land on -5.
- Answer: -5
-27 × 16 = ?
- Multiply the sizes: 27 × 16 = 432.
- Same signs give positive, different signs give negative.
- Answer: -432
- Answer: -432
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
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- Start with Rules and Methods in Introducing Absolute Value Common Errors, Key Vocabulary of Introducing Absolute Value Common Errors, Introducing Absolute Value Word Problems. Each one has its own free lesson, worksheet and quiz.
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- Recognition first, then understanding, application, reasoning and finally mastery — the same ladder used across every free resource on the platform.
- What comes next after Working with Introducing Absolute Value Common Errors?
- Move on to Introducing Absolute Value Common Errors in Examinations, Introducing Absolute Value Essentials, Introducing Absolute Value Techniques, Introducing Absolute Value Word Problems, which build directly on this idea.
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