Vidaara.orgClass 5 · Mathematics
CodeVID-M5-WS
Factors, Multiples, HCF & LCM — 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.
The factors of 18 are…
- A.1, 2, 3, 6, 9, 18
- B.1, 18
- C.2, 9
- D.1, 2, 9, 18
2.
Is 1 prime or composite?
- A.prime
- B.composite
- C.neither
- D.both
3.
LCM of 5 and 7 = ?
- A.12
- B.35
- C.70
- D.57
4.
HCF of 12 and 18 = ?
- A.3
- B.6
- C.9
- D.12
5.
Which number is PRIME?
- A.9
- B.11
- C.15
- D.21
6.
Which number is COMPOSITE?
- A.7
- B.13
- C.9
- D.5
7.
LCM of 3 and 5 = ?
- A.8
- B.15
- C.30
- D.10
8.
LCM of 6 and 8 = ?
- A.24
- B.48
- C.12
- D.16
9.
Which is a multiple of 9?
- A.27
- B.20
- C.25
- D.32
10.
How many factors does a prime number have?
- A.1
- B.2
- C.3
- D.many
11.
LCM of 4 and 6 = ?
- A.10
- B.12
- C.18
- D.24
12.
Which of these is a factor of 18?
- A.5
- B.9
- C.7
- D.4
13.
Is 20 a multiple of 5?
- A.Yes
- B.No
- C.Only sometimes
- D.Cannot tell
14.
The smallest composite number is…
- A.1
- B.2
- C.3
- D.4
15.
Which of these is a factor of 12?
- A.5
- B.4
- C.7
- D.8
Section B — Challenge / Olympiad (2 marks each)
5 × 2 = 10 marks
16.
The largest square tile that can exactly cover a 12 cm by 18 cm rectangle has side…
- A.4 cm
- B.6 cm
- C.9 cm
- D.3 cm
17.
How many factors does 24 have?
- A.6
- B.7
- C.8
- D.5
18.
Which number is both a multiple of 5 and a prime?
- A.5
- B.10
- C.15
- D.25
19.
Which number has exactly 3 factors?
- A.6
- B.8
- C.9
- D.10
20.
The sum of the first three prime numbers is…
- A.9
- B.10
- C.11
- D.6
Answer Key
Section A — Multiple Choice (1 mark each)
- (A) 1, 2, 3, 6, 9, 18
- (C) neither
- (B) 35
- (B) 6
- (B) 11
- (C) 9
- (B) 15
- (A) 24
- (A) 27
- (B) 2
- (B) 12
- (B) 9
- (A) Yes
- (D) 4
- (B) 4
Section B — Challenge / Olympiad (2 marks each)
- (B) 6 cm
- (C) 8
- (A) 5
- (C) 9
- (B) 10
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