Free Grade 3 Working with Introducing Sampling Common Errors: Common Mistakes Flashcards
Free Grade 3 flashcards for Working with Introducing Sampling Common Errors: Common Mistakes: 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
25 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- UnderstandExplain working with introducing sampling common errors: common mistakes
Explain working with introducing sampling common errors: common mistakes accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate working with introducing sampling common errors: common mistakes
Calculate working with introducing sampling common errors: common mistakes accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare working with introducing sampling common errors: common mistakes
Compare working with introducing sampling common errors: common mistakes accurately in a familiar context.
Assessed by: Exit ticket of four short items
- EvaluateJustify working with introducing sampling common errors: common mistakes
Justify working with introducing sampling common errors: common mistakes 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 Common Errors: Common Mistakes 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 6, Blue 3, Green 10, Yellow 11. In a pie chart, what angle does Blue get?[1]
- 2.In a survey: Red 10, Blue 9, Green 4, Yellow 8. In a pie chart, what angle does Red get?[1]
- 3.In a survey: Red 7, Blue 8, Green 9, Yellow 4. In a pie chart, what angle does Blue get?[1]
- 4.In a survey: Red 6, Blue 4, Green 14, Yellow 9. In a pie chart, what angle does Red get?[1]
- 5.In a survey: Red 8, Blue 6, Green 11, Yellow 12. In a pie chart, what angle does Yellow get?[2]
- 6.In a survey: Red 6, Blue 9, Green 12, Yellow 3. In a pie chart, what angle does Yellow get?[2]
- 7.In a survey: Red 13, Blue 10, Green 2, Yellow 8. In a pie chart, what angle does Green get?[2]
- 8.In a survey: Red 15, Blue 14, Green 8, Yellow 6. In a pie chart, what angle does Green get?[2]
- 9.In a survey: Red 10, Blue 13, Green 9, Yellow 15. In a pie chart, what angle does Yellow get?[3]
- 10.In a survey: Red 15, Blue 8, Green 3, Yellow 3. In a pie chart, what angle does Blue get?[3]
- 11.In a survey: Red 12, Blue 14, Green 11, Yellow 6. In a pie chart, what angle does Yellow get?[3]
- 12.In a survey: Red 7, Blue 9, Green 3, Yellow 6. In a pie chart, what angle does Green get?[3]
Show answers and working
1. 36°
Total = 30. Blue fraction = 3/30. 3/30 × 360° = 36°.
2. 116.1°
Total = 31. Red fraction = 10/31. 10/31 × 360° = 116.1°.
3. 102.9°
Total = 28. Blue fraction = 8/28. 8/28 × 360° = 102.9°.
4. 65.5°
Total = 33. Red fraction = 6/33. 6/33 × 360° = 65.5°.
5. 116.8°
Total = 37. Yellow fraction = 12/37. 12/37 × 360° = 116.8°.
6. 36°
Total = 30. Yellow fraction = 3/30. 3/30 × 360° = 36°.
7. 21.8°
Total = 33. Green fraction = 2/33. 2/33 × 360° = 21.8°.
8. 67°
Total = 43. Green fraction = 8/43. 8/43 × 360° = 67°.
9. 114.9°
Total = 47. Yellow fraction = 15/47. 15/47 × 360° = 114.9°.
10. 99.3°
Total = 29. Blue fraction = 8/29. 8/29 × 360° = 99.3°.
11. 50.2°
Total = 43. Yellow fraction = 6/43. 6/43 × 360° = 50.2°.
12. 43.2°
Total = 25. Green fraction = 3/25. 3/25 × 360° = 43.2°.
Worked examples
In a survey: Red 14, Blue 4, Green 4, Yellow 4. In a pie chart, what angle does Green get?
- Total = 26.
- Green fraction = 4/26.
- 4/26 × 360° = 55.4°.
- Answer: 55.4°
In a survey: Red 2, Blue 7, Green 6, Yellow 15. In a pie chart, what angle does Yellow get?
- Total = 30.
- Yellow fraction = 15/30.
- 15/30 × 360° = 180°.
- Answer: 180°
In a survey: Red 12, Blue 3, Green 4, Yellow 2. In a pie chart, what angle does Yellow get?
- Total = 21.
- Yellow fraction = 2/21.
- 2/21 × 360° = 34.3°.
- Answer: 34.3°
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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