Free Grade 3 Averages from Tables in Context Common Errors Flashcards
Free Grade 3 flashcards for Averages from Tables in Context 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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25 min
24
Learning objectives
Every objective is checkable, and each one maps to an activity and an assessment.
- RememberIdentify averages from tables in context common errors
Identify averages from tables in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- UnderstandExplain averages from tables in context common errors
Explain averages from tables in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- ApplyCalculate averages from tables in context common errors
Calculate averages from tables in context common errors accurately in a familiar context.
Assessed by: Exit ticket of four short items
- AnalyseCompare averages from tables in context common errors
Compare averages from tables in context 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 Averages from Tables in Context 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 5, 6, 8, 14, 20, find the mean, median, mode and range.[1]
- 2.For the data 4, 7, 8, 9, 14, find the mean, median, mode and range.[1]
- 3.For the data 3, 5, 8, 9, 11, find the mean, median, mode and range.[1]
- 4.For the data 5, 10, 13, 14, 20, find the mean, median, mode and range.[1]
- 5.For the data 8, 17, 19, 29, 32, 36, 38, find the mean, median, mode and range.[2]
- 6.For the data 5, 7, 9, 12, 32, 33, 38, find the mean, median, mode and range.[2]
- 7.For the data 5, 11, 22, 26, 34, 38, 39, find the mean, median, mode and range.[2]
- 8.For the data 12, 28, 28, 33, 36, 36, 40, find the mean, median, mode and range.[2]
- 9.For the data 15, 18, 28, 29, 42, 52, 54, 57, 58, find the mean, median, mode and range.[3]
- 10.For the data 8, 11, 20, 25, 27, 38, 44, 51, 60, find the mean, median, mode and range.[3]
- 11.For the data 7, 24, 31, 34, 38, 39, 42, 46, 53, find the mean, median, mode and range.[3]
- 12.For the data 2, 4, 10, 38, 41, 42, 43, 52, 54, find the mean, median, mode and range.[3]
Show answers and working
1. Mean 10.6, median 8, mode none, range 15
Mean = 53 ÷ 5 = 10.6. Median = middle value in order = 8. Mode = most common = no repeated value. Range = 20 − 5 = 15.
2. Mean 8.4, median 8, mode none, range 10
Mean = 42 ÷ 5 = 8.4. Median = middle value in order = 8. Mode = most common = no repeated value. Range = 14 − 4 = 10.
3. Mean 7.2, median 8, mode none, range 8
Mean = 36 ÷ 5 = 7.2. Median = middle value in order = 8. Mode = most common = no repeated value. Range = 11 − 3 = 8.
4. Mean 12.4, median 13, mode none, range 15
Mean = 62 ÷ 5 = 12.4. Median = middle value in order = 13. Mode = most common = no repeated value. Range = 20 − 5 = 15.
5. Mean 25.57, median 29, mode none, range 30
Mean = 179 ÷ 7 = 25.57. Median = middle value in order = 29. Mode = most common = no repeated value. Range = 38 − 8 = 30.
6. Mean 19.43, median 12, mode none, range 33
Mean = 136 ÷ 7 = 19.43. Median = middle value in order = 12. Mode = most common = no repeated value. Range = 38 − 5 = 33.
7. Mean 25, median 26, mode none, range 34
Mean = 175 ÷ 7 = 25. Median = middle value in order = 26. Mode = most common = no repeated value. Range = 39 − 5 = 34.
8. Mean 30.43, median 33, mode 28 and 36, range 28
Mean = 213 ÷ 7 = 30.43. Median = middle value in order = 33. Mode = most common = 28 and 36. Range = 40 − 12 = 28.
9. Mean 39.22, median 42, mode none, range 43
Mean = 353 ÷ 9 = 39.22. Median = middle value in order = 42. Mode = most common = no repeated value. Range = 58 − 15 = 43.
10. Mean 31.56, median 27, mode none, range 52
Mean = 284 ÷ 9 = 31.56. Median = middle value in order = 27. Mode = most common = no repeated value. Range = 60 − 8 = 52.
11. Mean 34.89, median 38, mode none, range 46
Mean = 314 ÷ 9 = 34.89. Median = middle value in order = 38. Mode = most common = no repeated value. Range = 53 − 7 = 46.
12. Mean 31.78, median 41, mode none, range 52
Mean = 286 ÷ 9 = 31.78. Median = middle value in order = 41. Mode = most common = no repeated value. Range = 54 − 2 = 52.
Worked examples
For the data 2, 6, 11, 14, 15, find the mean, median, mode and range.
- Mean = 48 ÷ 5 = 9.6.
- Median = middle value in order = 11.
- Mode = most common = no repeated value.
- Range = 15 − 2 = 13.
- Answer: Mean 9.6, median 11, mode none, range 13
For the data 3, 6, 30, 31, 35, 37, 39, find the mean, median, mode and range.
- Mean = 181 ÷ 7 = 25.86.
- Median = middle value in order = 31.
- Mode = most common = no repeated value.
- Range = 39 − 3 = 36.
- Answer: Mean 25.86, median 31, mode none, range 36
For the data 11, 19, 20, 35, 42, 44, 47, 50, 52, find the mean, median, mode and range.
- Mean = 320 ÷ 9 = 35.56.
- Median = middle value in order = 42.
- Mode = most common = no repeated value.
- Range = 52 − 11 = 41.
- Answer: Mean 35.56, median 42, mode none, range 41
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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