Free Grade 3 Working with Introducing Sampling Techniques: Step-by-step Method — Application Flashcards
Free Grade 3 flashcards for Working with Introducing Sampling Techniques: 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°.
Free
Core
35 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with introducing sampling techniques: step-by-step method — application
Identify working with introducing sampling techniques: step-by-step method — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with introducing sampling techniques: step-by-step method — application
Explain working with introducing sampling techniques: step-by-step method — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing sampling techniques: step-by-step method — application
Calculate working with introducing sampling techniques: step-by-step method — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing sampling techniques: step-by-step method — application
Compare working with introducing sampling techniques: 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 Techniques: 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 7, Blue 13, Green 8, Yellow 15. In a pie chart, what angle does Red get?[1]
- 2.In a survey: Red 9, Blue 11, Green 3, Yellow 3. In a pie chart, what angle does Blue get?[1]
- 3.In a survey: Red 4, Blue 3, Green 8, Yellow 4. In a pie chart, what angle does Yellow get?[1]
- 4.In a survey: Red 7, Blue 13, Green 15, Yellow 10. In a pie chart, what angle does Blue get?[1]
- 5.In a survey: Red 15, Blue 5, Green 13, Yellow 10. In a pie chart, what angle does Green get?[2]
- 6.In a survey: Red 13, Blue 3, Green 5, Yellow 15. In a pie chart, what angle does Red get?[2]
- 7.In a survey: Red 3, Blue 4, Green 3, Yellow 9. In a pie chart, what angle does Green get?[2]
- 8.In a survey: Red 15, Blue 3, Green 13, Yellow 2. In a pie chart, what angle does Green get?[2]
- 9.In a survey: Red 10, Blue 11, Green 10, Yellow 14. In a pie chart, what angle does Yellow get?[3]
- 10.In a survey: Red 9, Blue 8, Green 6, Yellow 13. In a pie chart, what angle does Green get?[3]
- 11.In a survey: Red 10, Blue 8, Green 2, Yellow 10. In a pie chart, what angle does Blue get?[3]
- 12.In a survey: Red 12, Blue 12, Green 13, Yellow 4. In a pie chart, what angle does Red get?[3]
Show answers and working
1. 58.6°
Total = 43. Red fraction = 7/43. 7/43 × 360° = 58.6°.
2. 152.3°
Total = 26. Blue fraction = 11/26. 11/26 × 360° = 152.3°.
3. 75.8°
Total = 19. Yellow fraction = 4/19. 4/19 × 360° = 75.8°.
4. 104°
Total = 45. Blue fraction = 13/45. 13/45 × 360° = 104°.
5. 108.8°
Total = 43. Green fraction = 13/43. 13/43 × 360° = 108.8°.
6. 130°
Total = 36. Red fraction = 13/36. 13/36 × 360° = 130°.
7. 56.8°
Total = 19. Green fraction = 3/19. 3/19 × 360° = 56.8°.
8. 141.8°
Total = 33. Green fraction = 13/33. 13/33 × 360° = 141.8°.
9. 112°
Total = 45. Yellow fraction = 14/45. 14/45 × 360° = 112°.
10. 60°
Total = 36. Green fraction = 6/36. 6/36 × 360° = 60°.
11. 96°
Total = 30. Blue fraction = 8/30. 8/30 × 360° = 96°.
12. 105.4°
Total = 41. Red fraction = 12/41. 12/41 × 360° = 105.4°.
Worked examples
In a survey: Red 4, Blue 10, Green 5, Yellow 2. In a pie chart, what angle does Blue get?
- Total = 21.
- Blue fraction = 10/21.
- 10/21 × 360° = 171.4°.
- Answer: 171.4°
In a survey: Red 7, Blue 14, Green 7, Yellow 12. In a pie chart, what angle does Red get?
- Total = 40.
- Red fraction = 7/40.
- 7/40 × 360° = 63°.
- Answer: 63°
In a survey: Red 5, Blue 6, Green 8, Yellow 12. In a pie chart, what angle does Blue get?
- Total = 31.
- Blue fraction = 6/31.
- 6/31 × 360° = 69.7°.
- Answer: 69.7°
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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