Free Grade 3 Working with Introducing Adding Integers Common Errors: Step-by-step Method Worksheets
Free Grade 3 worksheets for Working with Introducing Adding Integers Common Errors: Step-by-step Method: 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.
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Higher
25 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with introducing adding integers common errors: step-by-step method
Identify working with introducing adding integers common errors: step-by-step method accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with introducing adding integers common errors: step-by-step method
Explain working with introducing adding integers common errors: step-by-step method accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing adding integers common errors: step-by-step method
Calculate working with introducing adding integers common errors: step-by-step method accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing adding integers common errors: step-by-step method
Compare working with introducing adding integers common errors: step-by-step method 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 Adding Integers Common Errors: Step-by-step Method 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.
- 1.5 + 8 = ?[1]
- 2.9 − 10 = ?[1]
- 3.7 − (-2) = ?[1]
- 4.6 − 9 = ?[1]
- 5.-17 − (-6) = ?[2]
- 6.1 + 19 = ?[2]
- 7.-3 + (-10) = ?[2]
- 8.2 − (-4) = ?[2]
- 9.0 + 4 = ?[3]
- 10.11 + (-6) = ?[3]
- 11.6 − (-24) = ?[3]
- 12.3 − (-8) = ?[3]
Show answers and working
1. 13
Start at 5 on a number line. Move 8 right. You land on 13.
2. -1
Subtracting 10 is the same as adding -10. 9 + (-10) = -1
3. 9
Subtracting (-2) is the same as adding 2. 7 + 2 = 9
4. -3
Subtracting 9 is the same as adding -9. 6 + (-9) = -3
5. -11
Subtracting (-6) is the same as adding 6. -17 + 6 = -11
6. 20
Start at 1 on a number line. Move 19 right. You land on 20.
7. -13
Start at -3 on a number line. Move 10 left. You land on -13.
8. 6
Subtracting (-4) is the same as adding 4. 2 + 4 = 6
9. 4
Start at 0 on a number line. Move 4 right. You land on 4.
10. 5
Start at 11 on a number line. Move 6 left. You land on 5.
11. 30
Subtracting (-24) is the same as adding 24. 6 + 24 = 30
12. 11
Subtracting (-8) is the same as adding 8. 3 + 8 = 11
Worked examples
3 − 10 = ?
- Subtracting 10 is the same as adding -10.
- 3 + (-10) = -7
- Answer: -7
-8 + 4 = ?
- Start at -8 on a number line.
- Move 4 right.
- You land on -4.
- Answer: -4
-27 − 14 = ?
- Subtracting 14 is the same as adding -14.
- -27 + (-14) = -41
- Answer: -41
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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