Vidaara.orgClass 5 · Mathematics
CodeVID-M05-07-MEAN-01
Finding the Mean - Assignment
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Section A carries 1 mark each, Section B 2 marks, Section C 3 marks and Section D 5 marks.
- Show all working for Sections B, C and D. Only final answers are given at the end — for full solutions, raise your doubts with your teacher.
Section A — Multiple Choice Questions
5 × 1 = 5 marks
1.
The mean (average) $=$
- A.middle value
- B.$\tfrac{\text{sum}}{\text{number}}$
- C.most frequent value
- D.largest value
2.
The mean of $2, 4, 6$ is:
- A.$3$
- B.$4$
- C.$6$
- D.$12$
3.
To find the mean, first:
- A.order the data
- B.add all the values
- C.find the mode
- D.subtract
4.
The mean of $5, 5, 5$ is:
- A.$3$
- B.$5$
- C.$15$
- D.$0$
5.
The mean is a measure of the ___ of data.
- A.spread
- B.centre
- C.maximum
- D.order
Section B — Short Answer (2 marks)
4 × 2 = 8 marks
6.
Find the mean of $4, 6, 8$.
7.
Find the mean of $10, 20$.
8.
Find the mean of $5, 5, 5$.
9.
If the mean of $3$ numbers is $10$, find their sum.
Section C — Short Answer (3 marks)
4 × 3 = 12 marks
10.
Find the mean of $12, 15, 18, 21, 24$.
11.
Find the mean of $7, 9, 11, 13$.
12.
The mean of $4$ numbers is $8$. Find their total.
13.
Find the mean of $2, 4, 6, 8, 10$.
Section D — Long Answer (5 marks)
2 × 5 = 10 marks
14.
A student scored $80, 75, 90, 85$ and $70$ in five tests. Find the mean score.
15.
The mean of $5$ numbers is $12$. Four of them are $10, 14, 9$ and $13$. Find the fifth.
Answer Key
Section A — Multiple Choice Questions
- (B) $\tfrac{\text{sum}}{\text{number}}$
- (B) $4$
- (B) add all the values
- (B) $5$
- (B) centre
Section B — Short Answer (2 marks)
- $6$.
- $15$.
- $5$.
- $30$.
Section C — Short Answer (3 marks)
- $18$.
- $10$.
- $32$.
- $6$.
Section D — Long Answer (5 marks)
- $80$.
- $14$.
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