Free Grade 3 Working with Introducing Sampling Essentials: Step-by-step Method — Application Flashcards
Free Grade 3 flashcards for Working with Introducing Sampling Essentials: Step-by-step Method — Application: 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°.
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15 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with introducing sampling essentials: step-by-step method — application
Identify working with introducing sampling essentials: step-by-step method — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with introducing sampling essentials: step-by-step method — application
Explain working with introducing sampling essentials: step-by-step method — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing sampling essentials: step-by-step method — application
Calculate working with introducing sampling essentials: step-by-step method — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing sampling essentials: step-by-step method — application
Compare working with introducing sampling essentials: step-by-step method — application 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 Sampling Essentials: Step-by-step Method — Application 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 13, Blue 10, Green 8, Yellow 6. In a pie chart, what angle does Red get?[1]
- 2.In a survey: Red 4, Blue 8, Green 8, Yellow 11. In a pie chart, what angle does Yellow get?[1]
- 3.In a survey: Red 4, Blue 10, Green 13, Yellow 3. In a pie chart, what angle does Green get?[1]
- 4.In a survey: Red 9, Blue 13, Green 2, Yellow 7. In a pie chart, what angle does Red get?[1]
- 5.In a survey: Red 11, Blue 2, Green 4, Yellow 15. In a pie chart, what angle does Yellow get?[2]
- 6.In a survey: Red 8, Blue 10, Green 5, Yellow 15. In a pie chart, what angle does Yellow get?[2]
- 7.In a survey: Red 14, Blue 8, Green 3, Yellow 14. In a pie chart, what angle does Red get?[2]
- 8.In a survey: Red 5, Blue 15, Green 2, Yellow 6. In a pie chart, what angle does Green get?[2]
- 9.In a survey: Red 8, Blue 8, Green 10, Yellow 3. In a pie chart, what angle does Green get?[3]
- 10.In a survey: Red 15, Blue 4, Green 4, Yellow 13. In a pie chart, what angle does Blue get?[3]
- 11.In a survey: Red 7, Blue 11, Green 13, Yellow 11. In a pie chart, what angle does Green get?[3]
- 12.In a survey: Red 13, Blue 4, Green 3, Yellow 4. In a pie chart, what angle does Yellow get?[3]
Show answers and working
1. 126.5°
Total = 37. Red fraction = 13/37. 13/37 × 360° = 126.5°.
2. 127.7°
Total = 31. Yellow fraction = 11/31. 11/31 × 360° = 127.7°.
3. 156°
Total = 30. Green fraction = 13/30. 13/30 × 360° = 156°.
4. 104.5°
Total = 31. Red fraction = 9/31. 9/31 × 360° = 104.5°.
5. 168.8°
Total = 32. Yellow fraction = 15/32. 15/32 × 360° = 168.8°.
6. 142.1°
Total = 38. Yellow fraction = 15/38. 15/38 × 360° = 142.1°.
7. 129.2°
Total = 39. Red fraction = 14/39. 14/39 × 360° = 129.2°.
8. 25.7°
Total = 28. Green fraction = 2/28. 2/28 × 360° = 25.7°.
9. 124.1°
Total = 29. Green fraction = 10/29. 10/29 × 360° = 124.1°.
10. 40°
Total = 36. Blue fraction = 4/36. 4/36 × 360° = 40°.
11. 111.4°
Total = 42. Green fraction = 13/42. 13/42 × 360° = 111.4°.
12. 60°
Total = 24. Yellow fraction = 4/24. 4/24 × 360° = 60°.
Worked examples
In a survey: Red 11, Blue 5, Green 14, Yellow 9. In a pie chart, what angle does Green get?
- Total = 39.
- Green fraction = 14/39.
- 14/39 × 360° = 129.2°.
- Answer: 129.2°
In a survey: Red 12, Blue 4, Green 2, Yellow 14. In a pie chart, what angle does Red get?
- Total = 32.
- Red fraction = 12/32.
- 12/32 × 360° = 135°.
- Answer: 135°
In a survey: Red 12, Blue 8, Green 2, Yellow 12. In a pie chart, what angle does Yellow get?
- Total = 34.
- Yellow fraction = 12/34.
- 12/34 × 360° = 127.1°.
- Answer: 127.1°
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
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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