Free Grade 3 Introduction to Introducing Range Common Errors Flashcards
Free Grade 3 flashcards 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.
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20 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 1, 9, 10, 11, 20, find the mean, median, mode and range.[1]
- 2.For the data 3, 9, 14, 14, 19, find the mean, median, mode and range.[1]
- 3.For the data 2, 3, 14, 15, 18, find the mean, median, mode and range.[1]
- 4.For the data 2, 2, 8, 12, 14, find the mean, median, mode and range.[1]
- 5.For the data 7, 14, 19, 19, 36, 37, 40, find the mean, median, mode and range.[2]
- 6.For the data 2, 21, 26, 26, 28, 32, 34, find the mean, median, mode and range.[2]
- 7.For the data 6, 9, 11, 12, 16, 23, 38, find the mean, median, mode and range.[2]
- 8.For the data 3, 9, 13, 18, 25, 35, 39, find the mean, median, mode and range.[2]
- 9.For the data 1, 10, 15, 30, 42, 46, 47, 48, 59, find the mean, median, mode and range.[3]
- 10.For the data 2, 9, 9, 18, 30, 30, 49, 54, 55, find the mean, median, mode and range.[3]
- 11.For the data 11, 11, 22, 30, 37, 43, 44, 53, 60, find the mean, median, mode and range.[3]
- 12.For the data 1, 3, 6, 13, 19, 30, 36, 44, 47, find the mean, median, mode and range.[3]
Show answers and working
1. Mean 10.2, median 10, mode none, range 19
Mean = 51 ÷ 5 = 10.2. Median = middle value in order = 10. Mode = most common = no repeated value. Range = 20 − 1 = 19.
2. Mean 11.8, median 14, mode 14, range 16
Mean = 59 ÷ 5 = 11.8. Median = middle value in order = 14. Mode = most common = 14. Range = 19 − 3 = 16.
3. Mean 10.4, median 14, mode none, range 16
Mean = 52 ÷ 5 = 10.4. Median = middle value in order = 14. Mode = most common = no repeated value. Range = 18 − 2 = 16.
4. Mean 7.6, median 8, mode 2, range 12
Mean = 38 ÷ 5 = 7.6. Median = middle value in order = 8. Mode = most common = 2. Range = 14 − 2 = 12.
5. Mean 24.57, median 19, mode 19, range 33
Mean = 172 ÷ 7 = 24.57. Median = middle value in order = 19. Mode = most common = 19. Range = 40 − 7 = 33.
6. Mean 24.14, median 26, mode 26, range 32
Mean = 169 ÷ 7 = 24.14. Median = middle value in order = 26. Mode = most common = 26. Range = 34 − 2 = 32.
7. Mean 16.43, median 12, mode none, range 32
Mean = 115 ÷ 7 = 16.43. Median = middle value in order = 12. Mode = most common = no repeated value. Range = 38 − 6 = 32.
8. Mean 20.29, median 18, mode none, range 36
Mean = 142 ÷ 7 = 20.29. Median = middle value in order = 18. Mode = most common = no repeated value. Range = 39 − 3 = 36.
9. Mean 33.11, median 42, mode none, range 58
Mean = 298 ÷ 9 = 33.11. Median = middle value in order = 42. Mode = most common = no repeated value. Range = 59 − 1 = 58.
10. Mean 28.44, median 30, mode 9 and 30, range 53
Mean = 256 ÷ 9 = 28.44. Median = middle value in order = 30. Mode = most common = 9 and 30. Range = 55 − 2 = 53.
11. Mean 34.56, median 37, mode 11, range 49
Mean = 311 ÷ 9 = 34.56. Median = middle value in order = 37. Mode = most common = 11. Range = 60 − 11 = 49.
12. Mean 22.11, median 19, mode none, range 46
Mean = 199 ÷ 9 = 22.11. Median = middle value in order = 19. Mode = most common = no repeated value. Range = 47 − 1 = 46.
Worked examples
For the data 5, 6, 9, 12, 17, find the mean, median, mode and range.
- Mean = 49 ÷ 5 = 9.8.
- Median = middle value in order = 9.
- Mode = most common = no repeated value.
- Range = 17 − 5 = 12.
- Answer: Mean 9.8, median 9, mode none, range 12
For the data 8, 16, 17, 27, 36, 37, 39, find the mean, median, mode and range.
- Mean = 180 ÷ 7 = 25.71.
- Median = middle value in order = 27.
- Mode = most common = no repeated value.
- Range = 39 − 8 = 31.
- Answer: Mean 25.71, median 27, mode none, range 31
For the data 22, 35, 38, 41, 42, 47, 48, 50, 54, find the mean, median, mode and range.
- Mean = 377 ÷ 9 = 41.89.
- Median = middle value in order = 42.
- Mode = most common = no repeated value.
- Range = 54 − 22 = 32.
- Answer: Mean 41.89, median 42, mode none, range 32
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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- Start with Introducing Range Word Problems. Each one has its own free lesson, worksheet and quiz.
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