Vidaara.orgClass 4 · Mathematics
CodeVID-M4-WS
Factors & Multiples — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
15 × 1 = 15 marks
1.
Which is a common multiple of 2 and 5?
- A.10
- B.12
- C.15
- D.8
2.
The smallest prime number is…
- A.0
- B.1
- C.2
- D.3
3.
How many factors does a prime number have?
- A.1
- B.2
- C.3
- D.many
4.
Which is a common multiple of 3, 4 and 6?
- A.12
- B.9
- C.8
- D.10
5.
The smallest common multiple of 4 and 6 is…
- A.12
- B.24
- C.10
- D.6
6.
Is 20 a multiple of 5?
- A.Yes
- B.No
- C.Only sometimes
- D.Cannot tell
7.
Is 1 prime or composite?
- A.prime
- B.composite
- C.neither
- D.both
8.
How many factors does 16 have?
- A.3
- B.4
- C.5
- D.6
9.
The first four multiples of 3 are…
- A.3, 6, 9, 12
- B.1, 3, 6, 9
- C.3, 13, 23, 33
- D.3, 5, 7, 9
10.
Which is a common multiple of 2 and 3?
- A.6
- B.8
- C.9
- D.10
11.
Which is a multiple of 7?
- A.27
- B.28
- C.25
- D.32
12.
Which list has only PRIME numbers?
- A.2, 3, 5, 7
- B.2, 4, 6, 8
- C.1, 3, 5, 9
- D.3, 5, 9, 11
13.
The smallest common multiple of 6 and 8 is…
- A.24
- B.48
- C.12
- D.16
14.
How many prime numbers are there between 1 and 10?
- A.3
- B.4
- C.5
- D.6
15.
1 is a factor of…
- A.only even numbers
- B.every number
- C.only 1
- D.no number
Section B — Challenge / Olympiad (2 marks each)
5 × 2 = 10 marks
16.
Which number has exactly 3 factors?
- A.6
- B.8
- C.9
- D.10
17.
Which number is a factor of every whole number?
- A.0
- B.1
- C.2
- D.10
18.
The smallest common multiple of 4, 6 and 8 is…
- A.24
- B.48
- C.12
- D.16
19.
Two bells ring every 4 and 6 minutes. They ring together every ___ minutes.
- A.10
- B.12
- C.24
- D.8
20.
Which is NOT prime?
- A.29
- B.31
- C.33
- D.37
Answer Key
Section A — Multiple Choice (1 mark each)
- (A) 10
- (C) 2
- (B) 2
- (A) 12
- (A) 12
- (A) Yes
- (C) neither
- (C) 5
- (A) 3, 6, 9, 12
- (A) 6
- (B) 28
- (A) 2, 3, 5, 7
- (A) 24
- (B) 4
- (B) every number
Section B — Challenge / Olympiad (2 marks each)
- (C) 9
- (B) 1
- (A) 24
- (B) 12
- (C) 33
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