Free Grade 3 Rules and Methods in Introducing Sampling Essentials Flashcards
Free Grade 3 flashcards for Rules and Methods in 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
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain rules and methods in introducing sampling essentials
Explain rules and methods in introducing sampling essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate rules and methods in introducing sampling essentials
Calculate rules and methods in introducing sampling essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare rules and methods in introducing sampling essentials
Compare rules and methods in introducing sampling essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify rules and methods in introducing sampling essentials
Justify rules and methods in 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 Rules and Methods in 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 14, Blue 11, Green 7, Yellow 13. In a pie chart, what angle does Red get?[1]
- 2.In a survey: Red 12, Blue 14, Green 4, Yellow 2. In a pie chart, what angle does Red get?[1]
- 3.In a survey: Red 12, Blue 3, Green 3, Yellow 7. In a pie chart, what angle does Blue get?[1]
- 4.In a survey: Red 13, Blue 3, Green 13, Yellow 15. In a pie chart, what angle does Green get?[1]
- 5.In a survey: Red 13, Blue 10, Green 9, Yellow 4. In a pie chart, what angle does Red get?[2]
- 6.In a survey: Red 10, Blue 7, Green 7, Yellow 4. In a pie chart, what angle does Red get?[2]
- 7.In a survey: Red 13, Blue 11, Green 14, Yellow 7. In a pie chart, what angle does Red get?[2]
- 8.In a survey: Red 15, Blue 6, Green 9, Yellow 13. In a pie chart, what angle does Blue get?[2]
- 9.In a survey: Red 10, Blue 2, Green 10, Yellow 14. In a pie chart, what angle does Yellow get?[3]
- 10.In a survey: Red 4, Blue 8, Green 7, Yellow 6. In a pie chart, what angle does Yellow get?[3]
- 11.In a survey: Red 5, Blue 14, Green 9, Yellow 8. In a pie chart, what angle does Yellow get?[3]
- 12.In a survey: Red 5, Blue 7, Green 2, Yellow 13. In a pie chart, what angle does Red get?[3]
Show answers and working
1. 112°
Total = 45. Red fraction = 14/45. 14/45 × 360° = 112°.
2. 135°
Total = 32. Red fraction = 12/32. 12/32 × 360° = 135°.
3. 43.2°
Total = 25. Blue fraction = 3/25. 3/25 × 360° = 43.2°.
4. 106.4°
Total = 44. Green fraction = 13/44. 13/44 × 360° = 106.4°.
5. 130°
Total = 36. Red fraction = 13/36. 13/36 × 360° = 130°.
6. 128.6°
Total = 28. Red fraction = 10/28. 10/28 × 360° = 128.6°.
7. 104°
Total = 45. Red fraction = 13/45. 13/45 × 360° = 104°.
8. 50.2°
Total = 43. Blue fraction = 6/43. 6/43 × 360° = 50.2°.
9. 140°
Total = 36. Yellow fraction = 14/36. 14/36 × 360° = 140°.
10. 86.4°
Total = 25. Yellow fraction = 6/25. 6/25 × 360° = 86.4°.
11. 80°
Total = 36. Yellow fraction = 8/36. 8/36 × 360° = 80°.
12. 66.7°
Total = 27. Red fraction = 5/27. 5/27 × 360° = 66.7°.
Worked examples
In a survey: Red 6, Blue 12, Green 6, Yellow 10. In a pie chart, what angle does Yellow get?
- Total = 34.
- Yellow fraction = 10/34.
- 10/34 × 360° = 105.9°.
- Answer: 105.9°
In a survey: Red 7, Blue 9, Green 4, Yellow 7. In a pie chart, what angle does Blue get?
- Total = 27.
- Blue fraction = 9/27.
- 9/27 × 360° = 120°.
- Answer: 120°
In a survey: Red 9, Blue 7, Green 15, Yellow 14. In a pie chart, what angle does Blue get?
- Total = 45.
- Blue fraction = 7/45.
- 7/45 × 360° = 56°.
- Answer: 56°
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
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- What should a learner already know before this?
- Start with Key Vocabulary of Introducing Sampling Essentials, Introduction to Introducing Sampling Essentials, Data Presentation. 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, Introducing Sampling Essentials in Examinations, Introducing Sampling Techniques, Introducing Sampling Word Problems, which build directly on this idea.
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