Free Grade 3 Working with Negative Numbers Common Errors Flashcards
Free Grade 3 flashcards for Working with Negative Numbers 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
25 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain working with negative numbers common errors
Explain working with negative numbers common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with negative numbers common errors
Calculate working with negative numbers common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with negative numbers common errors
Compare working with negative numbers common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify working with negative numbers common errors
Justify working with negative numbers 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 Negative Numbers 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.-3 − (-6) = ?[1]
- 2.8 − 0 = ?[1]
- 3.5 + 9 = ?[1]
- 4.-10 + (-8) = ?[1]
- 5.-17 − (-4) = ?[2]
- 6.5 − (-20) = ?[2]
- 7.13 − 14 = ?[2]
- 8.-1 − 3 = ?[2]
- 9.29 × (-1) = ?[3]
- 10.-1 × 29 = ?[3]
- 11.-6 + (-18) = ?[3]
- 12.29 × 8 = ?[3]
Show answers and working
1. 3
Subtracting (-6) is the same as adding 6. -3 + 6 = 3
2. 8
Subtracting 0 is the same as adding 0. 8 + 0 = 8
3. 14
Start at 5 on a number line. Move 9 right. You land on 14.
4. -18
Start at -10 on a number line. Move 8 left. You land on -18.
5. -13
Subtracting (-4) is the same as adding 4. -17 + 4 = -13
6. 25
Subtracting (-20) is the same as adding 20. 5 + 20 = 25
7. -1
Subtracting 14 is the same as adding -14. 13 + (-14) = -1
8. -4
Subtracting 3 is the same as adding -3. -1 + (-3) = -4
9. -29
Multiply the sizes: 29 × 1 = 29. Same signs give positive, different signs give negative. Answer: -29
10. -29
Multiply the sizes: 1 × 29 = 29. Same signs give positive, different signs give negative. Answer: -29
11. -24
Start at -6 on a number line. Move 18 left. You land on -24.
12. 232
Multiply the sizes: 29 × 8 = 232. Same signs give positive, different signs give negative. Answer: 232
Worked examples
2 + 2 = ?
- Start at 2 on a number line.
- Move 2 right.
- You land on 4.
- Answer: 4
15 − (-11) = ?
- Subtracting (-11) is the same as adding 11.
- 15 + 11 = 26
- Answer: 26
-17 + (-6) = ?
- Start at -17 on a number line.
- Move 6 left.
- You land on -23.
- Answer: -23
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 Working with Negative Numbers Common Errors 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 Working with Negative Numbers Word Problems, Working with Negative Numbers Techniques, Introducing 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 Working with Negative Numbers Common Errors?
- Move on to Introducing Negative Numbers, Negative Numbers in Context, which build directly on this idea.
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