Free Grade 3 Introducing Sampling Essentials in Examinations Flashcards
Free Grade 3 flashcards for Introducing Sampling Essentials in Examinations: 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
Foundation
20 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain introducing sampling essentials in examinations
Explain introducing sampling essentials in examinations accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introducing sampling essentials in examinations
Calculate introducing sampling essentials in examinations accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introducing sampling essentials in examinations
Compare introducing sampling essentials in examinations accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify introducing sampling essentials in examinations
Justify introducing sampling essentials in examinations 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 Introducing Sampling Essentials in Examinations 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 11, Blue 5, Green 2, Yellow 9. In a pie chart, what angle does Yellow get?[1]
- 2.In a survey: Red 3, Blue 5, Green 8, Yellow 11. In a pie chart, what angle does Blue get?[1]
- 3.In a survey: Red 9, Blue 7, Green 7, Yellow 12. In a pie chart, what angle does Green get?[1]
- 4.In a survey: Red 6, Blue 6, Green 14, Yellow 6. In a pie chart, what angle does Blue get?[1]
- 5.In a survey: Red 12, Blue 2, Green 10, Yellow 13. In a pie chart, what angle does Red get?[2]
- 6.In a survey: Red 7, Blue 13, Green 4, Yellow 7. In a pie chart, what angle does Red get?[2]
- 7.In a survey: Red 3, Blue 3, Green 10, Yellow 2. In a pie chart, what angle does Green get?[2]
- 8.In a survey: Red 14, Blue 3, Green 9, Yellow 9. In a pie chart, what angle does Blue get?[2]
- 9.In a survey: Red 9, Blue 6, Green 14, Yellow 8. In a pie chart, what angle does Green get?[3]
- 10.In a survey: Red 10, Blue 11, Green 13, Yellow 2. In a pie chart, what angle does Blue get?[3]
- 11.In a survey: Red 7, Blue 4, Green 12, Yellow 7. In a pie chart, what angle does Green get?[3]
- 12.In a survey: Red 2, Blue 5, Green 7, Yellow 7. In a pie chart, what angle does Blue get?[3]
Show answers and working
1. 120°
Total = 27. Yellow fraction = 9/27. 9/27 × 360° = 120°.
2. 66.7°
Total = 27. Blue fraction = 5/27. 5/27 × 360° = 66.7°.
3. 72°
Total = 35. Green fraction = 7/35. 7/35 × 360° = 72°.
4. 67.5°
Total = 32. Blue fraction = 6/32. 6/32 × 360° = 67.5°.
5. 116.8°
Total = 37. Red fraction = 12/37. 12/37 × 360° = 116.8°.
6. 81.3°
Total = 31. Red fraction = 7/31. 7/31 × 360° = 81.3°.
7. 200°
Total = 18. Green fraction = 10/18. 10/18 × 360° = 200°.
8. 30.9°
Total = 35. Blue fraction = 3/35. 3/35 × 360° = 30.9°.
9. 136.2°
Total = 37. Green fraction = 14/37. 14/37 × 360° = 136.2°.
10. 110°
Total = 36. Blue fraction = 11/36. 11/36 × 360° = 110°.
11. 144°
Total = 30. Green fraction = 12/30. 12/30 × 360° = 144°.
12. 85.7°
Total = 21. Blue fraction = 5/21. 5/21 × 360° = 85.7°.
Worked examples
In a survey: Red 2, Blue 13, Green 9, Yellow 14. In a pie chart, what angle does Green get?
- Total = 38.
- Green fraction = 9/38.
- 9/38 × 360° = 85.3°.
- Answer: 85.3°
In a survey: Red 4, Blue 7, Green 2, Yellow 12. In a pie chart, what angle does Blue get?
- Total = 25.
- Blue fraction = 7/25.
- 7/25 × 360° = 100.8°.
- Answer: 100.8°
In a survey: Red 10, Blue 9, Green 10, Yellow 15. In a pie chart, what angle does Yellow get?
- Total = 44.
- Yellow fraction = 15/44.
- 15/44 × 360° = 122.7°.
- Answer: 122.7°
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
How mastery is evidenced, and which standards it maps to.
Every free resource for Introducing Sampling Essentials in Examinations
One concept, one ecosystem — all of it free.
Goes deeper
The entities below this one, each with the same complete free resource set.
Sibling concepts
Related concepts
Lateral links, including across subjects.
Next topics
All free formats for this concept
Every kind below is a real page, generated from this entity.
Learn — Meet the idea.
Practice — Build fluency.
Revise — Keep it in memory.
Assess — Prove mastery.
Apply — Use it in context.
Teach — Deliver it to a class.
Frequently asked
- Is this Grade 3 Introducing Sampling Essentials in Examinations flashcards really free?
- 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 Working with Introducing Sampling Essentials, Rules and Methods in Introducing Sampling Essentials, Data Presentation. 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 Introducing Sampling Essentials in Examinations?
- Move on to Introducing Sampling Techniques, Introducing Sampling Word Problems, Introducing Sampling Common Errors, which build directly on this idea.
Related resources
- Free Introducing Sampling Essentials in Examinations worksheets
- Free Introducing Sampling Essentials in Examinations quizzes
- Free Introducing Sampling Essentials in Examinations lessons
- Free Introducing Sampling Essentials in Examinations lesson plans
- Introducing Sampling Essentials in Examinations in the knowledge graph
- Free AI Tutor
Stuck on Introducing Sampling Essentials in Examinations? The AI Tutor already knows this page, its prerequisites and its common mistakes.
Open the free AI Tutor