Free Grade 3 Working with Introducing Adding Integers Essentials Flashcards
Free Grade 3 flashcards for Working with Introducing Adding Integers Essentials: 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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Core
15 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with introducing adding integers essentials
Identify working with introducing adding integers essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with introducing adding integers essentials
Explain working with introducing adding integers essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing adding integers essentials
Calculate working with introducing adding integers essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing adding integers essentials
Compare working with introducing adding integers essentials 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 Essentials 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.-9 − (-6) = ?[1]
- 2.-1 − 5 = ?[1]
- 3.0 + (-9) = ?[1]
- 4.-2 + 5 = ?[1]
- 5.18 × 0 = ?[2]
- 6.-17 + (-14) = ?[2]
- 7.16 + 7 = ?[2]
- 8.19 + 16 = ?[2]
- 9.11 − (-30) = ?[3]
- 10.7 + (-28) = ?[3]
- 11.28 × 11 = ?[3]
- 12.26 + 9 = ?[3]
Show answers and working
1. -3
Subtracting (-6) is the same as adding 6. -9 + 6 = -3
2. -6
Subtracting 5 is the same as adding -5. -1 + (-5) = -6
3. -9
Start at 0 on a number line. Move 9 left. You land on -9.
4. 3
Start at -2 on a number line. Move 5 right. You land on 3.
5. 0
Multiply the sizes: 18 × 0 = 0. Same signs give positive, different signs give negative. Answer: 0
6. -31
Start at -17 on a number line. Move 14 left. You land on -31.
7. 23
Start at 16 on a number line. Move 7 right. You land on 23.
8. 35
Start at 19 on a number line. Move 16 right. You land on 35.
9. 41
Subtracting (-30) is the same as adding 30. 11 + 30 = 41
10. -21
Start at 7 on a number line. Move 28 left. You land on -21.
11. 308
Multiply the sizes: 28 × 11 = 308. Same signs give positive, different signs give negative. Answer: 308
12. 35
Start at 26 on a number line. Move 9 right. You land on 35.
Worked examples
10 − (-9) = ?
- Subtracting (-9) is the same as adding 9.
- 10 + 9 = 19
- Answer: 19
18 × 3 = ?
- Multiply the sizes: 18 × 3 = 54.
- Same signs give positive, different signs give negative.
- Answer: 54
- Answer: 54
-13 − (-14) = ?
- Subtracting (-14) is the same as adding 14.
- -13 + 14 = 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
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- What should a learner already know before this?
- Start with Rules and Methods in Introducing Adding Integers Essentials, Key Vocabulary of Introducing Adding Integers Essentials, Integer Number Line. Each one has its own free lesson, worksheet and quiz.
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- Move on to Introducing Adding Integers Essentials in Examinations, Introducing Adding Integers Techniques, Introducing Adding Integers Word Problems, Introducing Adding Integers Common Errors, which build directly on this idea.
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