Free Grade 3 What is Working with Introducing Sampling Essentials Flashcards
Free Grade 3 flashcards for What is Working with Introducing Sampling Essentials: 12 real questions with a full answer key and worked solutions. Charts show data visually. In a pie chart, each category's angle is its fraction of the total multiplied by 360°.
Free
Foundation
35 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain what is working with introducing sampling essentials
Explain what is working with introducing sampling essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate what is working with introducing sampling essentials
Calculate what is working with introducing sampling essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare what is working with introducing sampling essentials
Compare what is working with introducing sampling essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify what is working with introducing sampling essentials
Justify what is working with introducing sampling 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 What is Working with Introducing Sampling Essentials works
Charts show data visually. In a pie chart, each category's angle is its fraction of the total multiplied by 360°.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.In a survey: Red 5, Blue 6, Green 7, Yellow 9. In a pie chart, what angle does Red get?[1]
- 2.In a survey: Red 13, Blue 8, Green 3, Yellow 14. In a pie chart, what angle does Red get?[1]
- 3.In a survey: Red 8, Blue 14, Green 3, Yellow 9. In a pie chart, what angle does Green get?[1]
- 4.In a survey: Red 9, Blue 12, Green 11, Yellow 3. In a pie chart, what angle does Green get?[1]
- 5.In a survey: Red 2, Blue 13, Green 8, Yellow 2. In a pie chart, what angle does Green get?[2]
- 6.In a survey: Red 2, Blue 9, Green 11, Yellow 3. In a pie chart, what angle does Blue get?[2]
- 7.In a survey: Red 14, Blue 7, Green 12, Yellow 4. In a pie chart, what angle does Yellow get?[2]
- 8.In a survey: Red 2, Blue 3, Green 7, Yellow 6. In a pie chart, what angle does Red get?[2]
- 9.In a survey: Red 7, Blue 8, Green 2, Yellow 4. In a pie chart, what angle does Yellow get?[3]
- 10.In a survey: Red 3, Blue 8, Green 6, Yellow 14. In a pie chart, what angle does Red get?[3]
- 11.In a survey: Red 11, Blue 4, Green 5, Yellow 12. In a pie chart, what angle does Blue get?[3]
- 12.In a survey: Red 4, Blue 3, Green 9, Yellow 13. In a pie chart, what angle does Yellow get?[3]
Show answers and working
1. 66.7°
Total = 27. Red fraction = 5/27. 5/27 × 360° = 66.7°.
2. 123.2°
Total = 38. Red fraction = 13/38. 13/38 × 360° = 123.2°.
3. 31.8°
Total = 34. Green fraction = 3/34. 3/34 × 360° = 31.8°.
4. 113.1°
Total = 35. Green fraction = 11/35. 11/35 × 360° = 113.1°.
5. 115.2°
Total = 25. Green fraction = 8/25. 8/25 × 360° = 115.2°.
6. 129.6°
Total = 25. Blue fraction = 9/25. 9/25 × 360° = 129.6°.
7. 38.9°
Total = 37. Yellow fraction = 4/37. 4/37 × 360° = 38.9°.
8. 40°
Total = 18. Red fraction = 2/18. 2/18 × 360° = 40°.
9. 68.6°
Total = 21. Yellow fraction = 4/21. 4/21 × 360° = 68.6°.
10. 34.8°
Total = 31. Red fraction = 3/31. 3/31 × 360° = 34.8°.
11. 45°
Total = 32. Blue fraction = 4/32. 4/32 × 360° = 45°.
12. 161.4°
Total = 29. Yellow fraction = 13/29. 13/29 × 360° = 161.4°.
Worked examples
In a survey: Red 14, Blue 12, Green 13, Yellow 8. In a pie chart, what angle does Green get?
- Total = 47.
- Green fraction = 13/47.
- 13/47 × 360° = 99.6°.
- Answer: 99.6°
In a survey: Red 14, Blue 8, Green 7, Yellow 4. In a pie chart, what angle does Red get?
- Total = 33.
- Red fraction = 14/33.
- 14/33 × 360° = 152.7°.
- Answer: 152.7°
In a survey: Red 15, Blue 6, Green 3, Yellow 6. In a pie chart, what angle does Green get?
- Total = 30.
- Green fraction = 3/30.
- 3/30 × 360° = 36°.
- Answer: 36°
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Uses 100 instead of 360 for pie-chart angles.
Correction: A full circle is 360°.
Forgets to find the total first.
Correction: Add all frequencies before working out fractions.
Teacher tips
- · Have pupils check that all angles add to 360°.
Parent tips
- · Look at charts in the news and ask what they show.
Real-life applications
- · News infographics, survey results.
Assessment objectives
How mastery is evidenced, and which standards it maps to.
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Frequently asked
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- What should a learner already know before this?
- Start with Rules and Methods in Introducing Sampling Essentials. 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.
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- Move on to Working with Introducing Sampling Essentials: Step-by-step Method, Working with Introducing Sampling Essentials: Worked Examples, Working with Introducing Sampling Essentials: Visual Models, Working with Introducing Sampling Essentials: Common Mistakes, which build directly on this idea.
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