Free Grade 3 Introduction to Introducing Sampling Essentials: Step-by-step Method Worksheets
Free Grade 3 worksheets for Introduction to Introducing Sampling Essentials: Step-by-step Method: 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.
- UnderstandExplain introduction to introducing sampling essentials: step-by-step method
Explain introduction to introducing sampling essentials: step-by-step method accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introduction to introducing sampling essentials: step-by-step method
Calculate introduction to introducing sampling essentials: step-by-step method accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introduction to introducing sampling essentials: step-by-step method
Compare introduction to introducing sampling essentials: step-by-step method accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify introduction to introducing sampling essentials: step-by-step method
Justify introduction to introducing sampling essentials: step-by-step method 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 Introduction to Introducing Sampling Essentials: Step-by-step Method 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 3, Green 10, Yellow 4. In a pie chart, what angle does Blue get?[1]
- 2.In a survey: Red 11, Blue 13, Green 14, Yellow 13. In a pie chart, what angle does Green get?[1]
- 3.In a survey: Red 8, Blue 9, Green 4, Yellow 3. In a pie chart, what angle does Red get?[1]
- 4.In a survey: Red 7, Blue 9, Green 8, Yellow 7. In a pie chart, what angle does Red get?[1]
- 5.In a survey: Red 11, Blue 14, Green 7, Yellow 4. In a pie chart, what angle does Green get?[2]
- 6.In a survey: Red 15, Blue 5, Green 14, Yellow 11. In a pie chart, what angle does Red get?[2]
- 7.In a survey: Red 10, Blue 2, Green 15, Yellow 5. In a pie chart, what angle does Green get?[2]
- 8.In a survey: Red 12, Blue 6, Green 5, Yellow 14. In a pie chart, what angle does Green get?[2]
- 9.In a survey: Red 12, Blue 6, Green 10, Yellow 7. In a pie chart, what angle does Red get?[3]
- 10.In a survey: Red 2, Blue 11, Green 5, Yellow 5. In a pie chart, what angle does Red get?[3]
- 11.In a survey: Red 6, Blue 14, Green 2, Yellow 11. In a pie chart, what angle does Red get?[3]
- 12.In a survey: Red 9, Blue 10, Green 6, Yellow 8. In a pie chart, what angle does Green get?[3]
Show answers and working
1. 33.8°
Total = 32. Blue fraction = 3/32. 3/32 × 360° = 33.8°.
2. 98.8°
Total = 51. Green fraction = 14/51. 14/51 × 360° = 98.8°.
3. 120°
Total = 24. Red fraction = 8/24. 8/24 × 360° = 120°.
4. 81.3°
Total = 31. Red fraction = 7/31. 7/31 × 360° = 81.3°.
5. 70°
Total = 36. Green fraction = 7/36. 7/36 × 360° = 70°.
6. 120°
Total = 45. Red fraction = 15/45. 15/45 × 360° = 120°.
7. 168.8°
Total = 32. Green fraction = 15/32. 15/32 × 360° = 168.8°.
8. 48.6°
Total = 37. Green fraction = 5/37. 5/37 × 360° = 48.6°.
9. 123.4°
Total = 35. Red fraction = 12/35. 12/35 × 360° = 123.4°.
10. 31.3°
Total = 23. Red fraction = 2/23. 2/23 × 360° = 31.3°.
11. 65.5°
Total = 33. Red fraction = 6/33. 6/33 × 360° = 65.5°.
12. 65.5°
Total = 33. Green fraction = 6/33. 6/33 × 360° = 65.5°.
Worked examples
In a survey: Red 10, Blue 9, Green 6, Yellow 14. In a pie chart, what angle does Red get?
- Total = 39.
- Red fraction = 10/39.
- 10/39 × 360° = 92.3°.
- Answer: 92.3°
In a survey: Red 7, Blue 8, Green 12, Yellow 10. In a pie chart, what angle does Blue get?
- Total = 37.
- Blue fraction = 8/37.
- 8/37 × 360° = 77.8°.
- Answer: 77.8°
In a survey: Red 15, Blue 3, Green 14, Yellow 5. In a pie chart, what angle does Blue get?
- Total = 37.
- Blue fraction = 3/37.
- 3/37 × 360° = 29.2°.
- Answer: 29.2°
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 What is Introduction to Introducing Sampling Essentials, Data Presentation. Each one has its own free lesson, worksheet and quiz.
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