Free Grade 3 Introduction to Introducing Sampling Word Problems Flashcards
Free Grade 3 flashcards for Introduction to Introducing Sampling Word Problems: 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
35 min
24
Learning objectives
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- UnderstandExplain introduction to introducing sampling word problems
Explain introduction to introducing sampling word problems accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introduction to introducing sampling word problems
Calculate introduction to introducing sampling word problems accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introduction to introducing sampling word problems
Compare introduction to introducing sampling word problems accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify introduction to introducing sampling word problems
Justify introduction to introducing sampling word problems 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 Word Problems 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 3, Blue 2, Green 12, Yellow 4. In a pie chart, what angle does Yellow get?[1]
- 2.In a survey: Red 4, Blue 7, Green 4, Yellow 12. In a pie chart, what angle does Yellow get?[1]
- 3.In a survey: Red 3, Blue 9, Green 5, Yellow 15. In a pie chart, what angle does Yellow get?[1]
- 4.In a survey: Red 13, Blue 3, Green 9, Yellow 6. In a pie chart, what angle does Yellow get?[1]
- 5.In a survey: Red 10, Blue 10, Green 2, Yellow 14. In a pie chart, what angle does Green get?[2]
- 6.In a survey: Red 13, Blue 3, Green 6, Yellow 2. In a pie chart, what angle does Blue get?[2]
- 7.In a survey: Red 6, Blue 7, Green 4, Yellow 5. In a pie chart, what angle does Yellow get?[2]
- 8.In a survey: Red 12, Blue 13, Green 4, Yellow 3. In a pie chart, what angle does Blue get?[2]
- 9.In a survey: Red 7, Blue 9, Green 3, Yellow 7. In a pie chart, what angle does Green get?[3]
- 10.In a survey: Red 11, Blue 12, Green 4, Yellow 5. In a pie chart, what angle does Green get?[3]
- 11.In a survey: Red 8, Blue 8, Green 6, Yellow 15. In a pie chart, what angle does Green get?[3]
- 12.In a survey: Red 4, Blue 15, Green 11, Yellow 10. In a pie chart, what angle does Red get?[3]
Show answers and working
1. 68.6°
Total = 21. Yellow fraction = 4/21. 4/21 × 360° = 68.6°.
2. 160°
Total = 27. Yellow fraction = 12/27. 12/27 × 360° = 160°.
3. 168.8°
Total = 32. Yellow fraction = 15/32. 15/32 × 360° = 168.8°.
4. 69.7°
Total = 31. Yellow fraction = 6/31. 6/31 × 360° = 69.7°.
5. 20°
Total = 36. Green fraction = 2/36. 2/36 × 360° = 20°.
6. 45°
Total = 24. Blue fraction = 3/24. 3/24 × 360° = 45°.
7. 81.8°
Total = 22. Yellow fraction = 5/22. 5/22 × 360° = 81.8°.
8. 146.3°
Total = 32. Blue fraction = 13/32. 13/32 × 360° = 146.3°.
9. 41.5°
Total = 26. Green fraction = 3/26. 3/26 × 360° = 41.5°.
10. 45°
Total = 32. Green fraction = 4/32. 4/32 × 360° = 45°.
11. 58.4°
Total = 37. Green fraction = 6/37. 6/37 × 360° = 58.4°.
12. 36°
Total = 40. Red fraction = 4/40. 4/40 × 360° = 36°.
Worked examples
In a survey: Red 12, Blue 9, Green 6, Yellow 12. In a pie chart, what angle does Yellow get?
- Total = 39.
- Yellow fraction = 12/39.
- 12/39 × 360° = 110.8°.
- Answer: 110.8°
In a survey: Red 8, Blue 3, Green 15, Yellow 14. In a pie chart, what angle does Yellow get?
- Total = 40.
- Yellow fraction = 14/40.
- 14/40 × 360° = 126°.
- Answer: 126°
In a survey: Red 4, Blue 9, Green 6, Yellow 13. In a pie chart, what angle does Green get?
- Total = 32.
- Green fraction = 6/32.
- 6/32 × 360° = 67.5°.
- Answer: 67.5°
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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Frequently asked
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- Yes. Every flashcards on FreeMathWorksheet is free to use, print and share — no account, no paywall and no watermark.
- What should a learner already know before this?
- Start with Introducing Sampling Techniques. Each one has its own free lesson, worksheet and quiz.
- How is the flashcards sequenced?
- Recognition first, then understanding, application, reasoning and finally mastery — the same ladder used across every free resource on the platform.
- What comes next after Introduction to Introducing Sampling Word Problems?
- Move on to Key Vocabulary of Introducing Sampling Word Problems, Rules and Methods in Introducing Sampling Word Problems, Working with Introducing Sampling Word Problems, Introducing Sampling Word Problems in Examinations, which build directly on this idea.
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