Free Grade 3 Rules and Methods in Sampling in Context Essentials Flashcards
Free Grade 3 flashcards for Rules and Methods in Sampling in Context 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
Core
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify rules and methods in sampling in context essentials
Identify rules and methods in sampling in context essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain rules and methods in sampling in context essentials
Explain rules and methods in sampling in context essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate rules and methods in sampling in context essentials
Calculate rules and methods in sampling in context essentials accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare rules and methods in sampling in context essentials
Compare rules and methods in sampling in context 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 Sampling in Context 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 13, Green 15, Yellow 14. In a pie chart, what angle does Yellow get?[1]
- 2.In a survey: Red 4, Blue 10, Green 13, Yellow 7. In a pie chart, what angle does Yellow get?[1]
- 3.In a survey: Red 10, Blue 13, Green 8, Yellow 4. In a pie chart, what angle does Yellow get?[1]
- 4.In a survey: Red 14, Blue 5, Green 14, Yellow 9. In a pie chart, what angle does Red get?[1]
- 5.In a survey: Red 5, Blue 14, Green 7, Yellow 13. In a pie chart, what angle does Yellow get?[2]
- 6.In a survey: Red 8, Blue 4, Green 8, Yellow 10. In a pie chart, what angle does Yellow get?[2]
- 7.In a survey: Red 12, Blue 11, Green 15, Yellow 10. In a pie chart, what angle does Yellow get?[2]
- 8.In a survey: Red 13, Blue 9, Green 12, Yellow 10. In a pie chart, what angle does Blue get?[2]
- 9.In a survey: Red 15, Blue 10, Green 12, Yellow 14. In a pie chart, what angle does Yellow get?[3]
- 10.In a survey: Red 2, Blue 2, Green 10, Yellow 15. In a pie chart, what angle does Red get?[3]
- 11.In a survey: Red 12, Blue 7, Green 14, Yellow 3. In a pie chart, what angle does Blue get?[3]
- 12.In a survey: Red 13, Blue 4, Green 8, Yellow 6. In a pie chart, what angle does Blue get?[3]
Show answers and working
1. 107.2°
Total = 47. Yellow fraction = 14/47. 14/47 × 360° = 107.2°.
2. 74.1°
Total = 34. Yellow fraction = 7/34. 7/34 × 360° = 74.1°.
3. 41.1°
Total = 35. Yellow fraction = 4/35. 4/35 × 360° = 41.1°.
4. 120°
Total = 42. Red fraction = 14/42. 14/42 × 360° = 120°.
5. 120°
Total = 39. Yellow fraction = 13/39. 13/39 × 360° = 120°.
6. 120°
Total = 30. Yellow fraction = 10/30. 10/30 × 360° = 120°.
7. 75°
Total = 48. Yellow fraction = 10/48. 10/48 × 360° = 75°.
8. 73.6°
Total = 44. Blue fraction = 9/44. 9/44 × 360° = 73.6°.
9. 98.8°
Total = 51. Yellow fraction = 14/51. 14/51 × 360° = 98.8°.
10. 24.8°
Total = 29. Red fraction = 2/29. 2/29 × 360° = 24.8°.
11. 70°
Total = 36. Blue fraction = 7/36. 7/36 × 360° = 70°.
12. 46.5°
Total = 31. Blue fraction = 4/31. 4/31 × 360° = 46.5°.
Worked examples
In a survey: Red 10, Blue 8, Green 3, Yellow 13. In a pie chart, what angle does Green get?
- Total = 34.
- Green fraction = 3/34.
- 3/34 × 360° = 31.8°.
- Answer: 31.8°
In a survey: Red 10, Blue 15, Green 6, Yellow 10. In a pie chart, what angle does Green get?
- Total = 41.
- Green fraction = 6/41.
- 6/41 × 360° = 52.7°.
- Answer: 52.7°
In a survey: Red 6, Blue 3, Green 6, Yellow 9. In a pie chart, what angle does Red get?
- Total = 24.
- Red fraction = 6/24.
- 6/24 × 360° = 90°.
- Answer: 90°
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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Frequently asked
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- What should a learner already know before this?
- Start with Key Vocabulary of Sampling in Context Essentials, Introduction to Sampling in Context Essentials, Working with Sampling. Each one has its own free lesson, worksheet and quiz.
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- Move on to Working with Sampling in Context Essentials, Sampling in Context Essentials in Examinations, Sampling in Context Techniques, Sampling in Context Word Problems, which build directly on this idea.
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