Free Grade 3 Working with Introducing Sampling Essentials: Visual Models — Application Flashcards
Free Grade 3 flashcards for Working with Introducing Sampling Essentials: Visual Models — 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
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify working with introducing sampling essentials: visual models — application
Identify working with introducing sampling essentials: visual models — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain working with introducing sampling essentials: visual models — application
Explain working with introducing sampling essentials: visual models — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing sampling essentials: visual models — application
Calculate working with introducing sampling essentials: visual models — application accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing sampling essentials: visual models — application
Compare working with introducing sampling essentials: visual models — 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: Visual Models — 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 15, Blue 13, Green 10, Yellow 10. In a pie chart, what angle does Yellow get?[1]
- 2.In a survey: Red 7, Blue 7, Green 5, Yellow 3. In a pie chart, what angle does Green get?[1]
- 3.In a survey: Red 11, Blue 8, Green 13, Yellow 6. In a pie chart, what angle does Red get?[1]
- 4.In a survey: Red 9, Blue 7, Green 12, Yellow 6. In a pie chart, what angle does Blue get?[1]
- 5.In a survey: Red 13, Blue 14, Green 12, Yellow 7. In a pie chart, what angle does Red get?[2]
- 6.In a survey: Red 3, Blue 15, Green 11, Yellow 15. In a pie chart, what angle does Blue get?[2]
- 7.In a survey: Red 13, Blue 4, Green 9, Yellow 7. In a pie chart, what angle does Green get?[2]
- 8.In a survey: Red 2, Blue 6, Green 8, Yellow 12. In a pie chart, what angle does Yellow get?[2]
- 9.In a survey: Red 10, Blue 9, Green 8, Yellow 10. In a pie chart, what angle does Blue get?[3]
- 10.In a survey: Red 13, Blue 13, Green 3, Yellow 2. In a pie chart, what angle does Green get?[3]
- 11.In a survey: Red 4, Blue 8, Green 15, Yellow 10. In a pie chart, what angle does Green get?[3]
- 12.In a survey: Red 13, Blue 2, Green 14, Yellow 14. In a pie chart, what angle does Blue get?[3]
Show answers and working
1. 75°
Total = 48. Yellow fraction = 10/48. 10/48 × 360° = 75°.
2. 81.8°
Total = 22. Green fraction = 5/22. 5/22 × 360° = 81.8°.
3. 104.2°
Total = 38. Red fraction = 11/38. 11/38 × 360° = 104.2°.
4. 74.1°
Total = 34. Blue fraction = 7/34. 7/34 × 360° = 74.1°.
5. 101.7°
Total = 46. Red fraction = 13/46. 13/46 × 360° = 101.7°.
6. 122.7°
Total = 44. Blue fraction = 15/44. 15/44 × 360° = 122.7°.
7. 98.2°
Total = 33. Green fraction = 9/33. 9/33 × 360° = 98.2°.
8. 154.3°
Total = 28. Yellow fraction = 12/28. 12/28 × 360° = 154.3°.
9. 87.6°
Total = 37. Blue fraction = 9/37. 9/37 × 360° = 87.6°.
10. 34.8°
Total = 31. Green fraction = 3/31. 3/31 × 360° = 34.8°.
11. 145.9°
Total = 37. Green fraction = 15/37. 15/37 × 360° = 145.9°.
12. 16.7°
Total = 43. Blue fraction = 2/43. 2/43 × 360° = 16.7°.
Worked examples
In a survey: Red 9, Blue 15, Green 2, Yellow 5. In a pie chart, what angle does Red get?
- Total = 31.
- Red fraction = 9/31.
- 9/31 × 360° = 104.5°.
- Answer: 104.5°
In a survey: Red 6, Blue 4, Green 13, Yellow 11. In a pie chart, what angle does Blue get?
- Total = 34.
- Blue fraction = 4/34.
- 4/34 × 360° = 42.4°.
- Answer: 42.4°
In a survey: Red 2, Blue 3, Green 6, Yellow 2. In a pie chart, what angle does Blue get?
- Total = 13.
- Blue fraction = 3/13.
- 3/13 × 360° = 83.1°.
- Answer: 83.1°
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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