Free Grade 3 Working with Sampling in Context Common Errors: Visual Models Flashcards
Free Grade 3 flashcards for Working with Sampling in Context Common Errors: Visual Models: 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
Higher
30 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain working with sampling in context common errors: visual models
Explain working with sampling in context common errors: visual models accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with sampling in context common errors: visual models
Calculate working with sampling in context common errors: visual models accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with sampling in context common errors: visual models
Compare working with sampling in context common errors: visual models accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify working with sampling in context common errors: visual models
Justify working with sampling in context common errors: visual models 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 Sampling in Context Common Errors: Visual Models 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 12, Blue 10, Green 3, Yellow 8. In a pie chart, what angle does Red get?[1]
- 2.In a survey: Red 10, Blue 4, Green 6, Yellow 2. In a pie chart, what angle does Red get?[1]
- 3.In a survey: Red 12, Blue 7, Green 14, Yellow 7. In a pie chart, what angle does Blue get?[1]
- 4.In a survey: Red 11, Blue 3, Green 14, Yellow 3. In a pie chart, what angle does Green get?[1]
- 5.In a survey: Red 2, Blue 2, Green 15, Yellow 4. In a pie chart, what angle does Red get?[2]
- 6.In a survey: Red 5, Blue 3, Green 7, Yellow 10. In a pie chart, what angle does Yellow get?[2]
- 7.In a survey: Red 15, Blue 13, Green 10, Yellow 11. In a pie chart, what angle does Red get?[2]
- 8.In a survey: Red 11, Blue 7, Green 2, Yellow 4. In a pie chart, what angle does Yellow get?[2]
- 9.In a survey: Red 12, Blue 9, Green 5, Yellow 5. In a pie chart, what angle does Red get?[3]
- 10.In a survey: Red 14, Blue 5, Green 11, Yellow 14. In a pie chart, what angle does Blue get?[3]
- 11.In a survey: Red 9, Blue 11, Green 2, Yellow 10. In a pie chart, what angle does Yellow get?[3]
- 12.In a survey: Red 11, Blue 14, Green 4, Yellow 15. In a pie chart, what angle does Yellow get?[3]
Show answers and working
1. 130.9°
Total = 33. Red fraction = 12/33. 12/33 × 360° = 130.9°.
2. 163.6°
Total = 22. Red fraction = 10/22. 10/22 × 360° = 163.6°.
3. 63°
Total = 40. Blue fraction = 7/40. 7/40 × 360° = 63°.
4. 162.6°
Total = 31. Green fraction = 14/31. 14/31 × 360° = 162.6°.
5. 31.3°
Total = 23. Red fraction = 2/23. 2/23 × 360° = 31.3°.
6. 144°
Total = 25. Yellow fraction = 10/25. 10/25 × 360° = 144°.
7. 110.2°
Total = 49. Red fraction = 15/49. 15/49 × 360° = 110.2°.
8. 60°
Total = 24. Yellow fraction = 4/24. 4/24 × 360° = 60°.
9. 139.4°
Total = 31. Red fraction = 12/31. 12/31 × 360° = 139.4°.
10. 40.9°
Total = 44. Blue fraction = 5/44. 5/44 × 360° = 40.9°.
11. 112.5°
Total = 32. Yellow fraction = 10/32. 10/32 × 360° = 112.5°.
12. 122.7°
Total = 44. Yellow fraction = 15/44. 15/44 × 360° = 122.7°.
Worked examples
In a survey: Red 8, Blue 8, Green 11, Yellow 10. In a pie chart, what angle does Red get?
- Total = 37.
- Red fraction = 8/37.
- 8/37 × 360° = 77.8°.
- Answer: 77.8°
In a survey: Red 13, Blue 12, Green 2, Yellow 11. In a pie chart, what angle does Green get?
- Total = 38.
- Green fraction = 2/38.
- 2/38 × 360° = 18.9°.
- Answer: 18.9°
In a survey: Red 6, Blue 10, Green 7, Yellow 2. In a pie chart, what angle does Blue get?
- Total = 25.
- Blue fraction = 10/25.
- 10/25 × 360° = 144°.
- Answer: 144°
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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- Start with Working with Sampling in Context Common Errors: Worked Examples, Working with Sampling in Context Common Errors: Step-by-step Method, Rules and Methods in Sampling in Context Common Errors. Each one has its own free lesson, worksheet and quiz.
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Related resources
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