Free Grade 3 Introduction to Introducing Range Common Errors Lesson Plans
Free Grade 3 lesson plans for Introduction to Introducing Range Common Errors: 12 real questions with a full answer key and worked solutions. The mean is the total divided by how many values. The median is the middle value in order. The mode is the most common. The range is largest minus smallest.
Free
Foundation
35 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify introduction to introducing range common errors
Identify introduction to introducing range common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain introduction to introducing range common errors
Explain introduction to introducing range common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate introduction to introducing range common errors
Calculate introduction to introducing range common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare introduction to introducing range common errors
Compare introduction to introducing range common errors 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 Range Common Errors works
The mean is the total divided by how many values. The median is the middle value in order. The mode is the most common. The range is largest minus smallest.
12 practice questions
Easy to hard, 24 marks in total. Try them first, then open the answers.
- 1.For the data 8, 9, 14, 14, 15, find the mean, median, mode and range.[1]
- 2.For the data 3, 3, 5, 14, 18, find the mean, median, mode and range.[1]
- 3.For the data 6, 13, 15, 17, 20, find the mean, median, mode and range.[1]
- 4.For the data 3, 5, 6, 18, 19, find the mean, median, mode and range.[1]
- 5.For the data 8, 12, 13, 21, 25, 28, 34, find the mean, median, mode and range.[2]
- 6.For the data 7, 7, 22, 24, 30, 35, 38, find the mean, median, mode and range.[2]
- 7.For the data 5, 8, 12, 12, 17, 19, 29, find the mean, median, mode and range.[2]
- 8.For the data 6, 11, 13, 19, 28, 30, 34, find the mean, median, mode and range.[2]
- 9.For the data 7, 13, 21, 21, 42, 47, 47, 48, 50, find the mean, median, mode and range.[3]
- 10.For the data 8, 13, 14, 17, 18, 20, 34, 45, 54, find the mean, median, mode and range.[3]
- 11.For the data 1, 3, 5, 25, 35, 51, 52, 57, 59, find the mean, median, mode and range.[3]
- 12.For the data 6, 14, 15, 16, 24, 33, 36, 36, 50, find the mean, median, mode and range.[3]
Show answers and working
1. Mean 12, median 14, mode 14, range 7
Mean = 60 ÷ 5 = 12. Median = middle value in order = 14. Mode = most common = 14. Range = 15 − 8 = 7.
2. Mean 8.6, median 5, mode 3, range 15
Mean = 43 ÷ 5 = 8.6. Median = middle value in order = 5. Mode = most common = 3. Range = 18 − 3 = 15.
3. Mean 14.2, median 15, mode none, range 14
Mean = 71 ÷ 5 = 14.2. Median = middle value in order = 15. Mode = most common = no repeated value. Range = 20 − 6 = 14.
4. Mean 10.2, median 6, mode none, range 16
Mean = 51 ÷ 5 = 10.2. Median = middle value in order = 6. Mode = most common = no repeated value. Range = 19 − 3 = 16.
5. Mean 20.14, median 21, mode none, range 26
Mean = 141 ÷ 7 = 20.14. Median = middle value in order = 21. Mode = most common = no repeated value. Range = 34 − 8 = 26.
6. Mean 23.29, median 24, mode 7, range 31
Mean = 163 ÷ 7 = 23.29. Median = middle value in order = 24. Mode = most common = 7. Range = 38 − 7 = 31.
7. Mean 14.57, median 12, mode 12, range 24
Mean = 102 ÷ 7 = 14.57. Median = middle value in order = 12. Mode = most common = 12. Range = 29 − 5 = 24.
8. Mean 20.14, median 19, mode none, range 28
Mean = 141 ÷ 7 = 20.14. Median = middle value in order = 19. Mode = most common = no repeated value. Range = 34 − 6 = 28.
9. Mean 32.89, median 42, mode 21 and 47, range 43
Mean = 296 ÷ 9 = 32.89. Median = middle value in order = 42. Mode = most common = 21 and 47. Range = 50 − 7 = 43.
10. Mean 24.78, median 18, mode none, range 46
Mean = 223 ÷ 9 = 24.78. Median = middle value in order = 18. Mode = most common = no repeated value. Range = 54 − 8 = 46.
11. Mean 32, median 35, mode none, range 58
Mean = 288 ÷ 9 = 32. Median = middle value in order = 35. Mode = most common = no repeated value. Range = 59 − 1 = 58.
12. Mean 25.56, median 24, mode 36, range 44
Mean = 230 ÷ 9 = 25.56. Median = middle value in order = 24. Mode = most common = 36. Range = 50 − 6 = 44.
Worked examples
For the data 8, 9, 11, 14, 15, find the mean, median, mode and range.
- Mean = 57 ÷ 5 = 11.4.
- Median = middle value in order = 11.
- Mode = most common = no repeated value.
- Range = 15 − 8 = 7.
- Answer: Mean 11.4, median 11, mode none, range 7
For the data 5, 11, 17, 18, 23, 29, 33, find the mean, median, mode and range.
- Mean = 136 ÷ 7 = 19.43.
- Median = middle value in order = 18.
- Mode = most common = no repeated value.
- Range = 33 − 5 = 28.
- Answer: Mean 19.43, median 18, mode none, range 28
For the data 2, 9, 10, 32, 38, 44, 53, 54, 60, find the mean, median, mode and range.
- Mean = 302 ÷ 9 = 33.56.
- Median = middle value in order = 38.
- Mode = most common = no repeated value.
- Range = 60 − 2 = 58.
- Answer: Mean 33.56, median 38, mode none, range 58
Interactive practice
Free, no account required — answer on screen or print it.
Common mistakes
What learners typically get wrong, and how to fix it.
Finds the median without ordering the data.
Correction: Always put the numbers in order first.
Gives the range as the two end numbers.
Correction: Range is one number: largest minus smallest.
Teacher tips
- · Collect real class data (heights, shoe sizes).
Parent tips
- · Work out your average bedtime over a week.
Real-life applications
- · Sports averages, typical prices, test scores.
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Frequently asked
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- What should a learner already know before this?
- Start with Introducing Range Word Problems. Each one has its own free lesson, worksheet and quiz.
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- What comes next after Introduction to Introducing Range Common Errors?
- Move on to Key Vocabulary of Introducing Range Common Errors, Rules and Methods in Introducing Range Common Errors, Working with Introducing Range Common Errors, Introducing Range Common Errors in Examinations, which build directly on this idea.
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