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Vidaara.orgClass 5 · Mathematics
CodeVID-M5-WS
Factors, Multiples, HCF & LCM — Practice Worksheet
Chapter: Factors, Multiples, HCF & LCM
Topic: Factors, Multiples, HCF & LCM
Maximum Marks: 25
Time: 30 minutes
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.
How many prime numbers are there between 1 and 10?
  • A.3
  • B.4
  • C.5
  • D.6
2.
Is 1 prime or composite?
  • A.prime
  • B.composite
  • C.neither
  • D.both
3.
The first four multiples of 4 are…
  • A.4, 8, 12, 16
  • B.1, 2, 4, 8
  • C.4, 14, 24, 34
  • D.4, 6, 8, 10
4.
Which list contains only PRIME numbers?
  • A.2, 3, 5, 7
  • B.2, 4, 6, 8
  • C.1, 3, 5, 9
  • D.3, 5, 9, 11
5.
HCF of 12 and 18 = ?
  • A.3
  • B.6
  • C.9
  • D.12
6.
How many factors does 16 have?
  • A.3
  • B.4
  • C.5
  • D.6
7.
Which is a multiple of 9?
  • A.27
  • B.20
  • C.25
  • D.32
8.
Which number is a factor of BOTH 6 and 9?
  • A.2
  • B.3
  • C.6
  • D.9
9.
LCM of 5 and 7 = ?
  • A.12
  • B.35
  • C.70
  • D.57
10.
The only even prime number is…
  • A.2
  • B.4
  • C.6
  • D.0
11.
HCF stands for…
  • A.Highest Common Factor
  • B.Half of Common Factor
  • C.Highest Counting Figure
  • D.High Constant Form
12.
HCF of 8 and 12 = ?
  • A.2
  • B.4
  • C.6
  • D.8
13.
Which of these is a factor of 12?
  • A.5
  • B.4
  • C.7
  • D.8
14.
Which number is PRIME?
  • A.9
  • B.11
  • C.15
  • D.21
15.
LCM of 3 and 5 = ?
  • A.8
  • B.15
  • C.30
  • D.10
Section B — Challenge / Olympiad (2 marks each) 5 × 2 = 10 marks
16.
Which number is both a multiple of 5 and a prime?
  • A.5
  • B.10
  • C.15
  • D.25
17.
The HCF of two different prime numbers is always…
  • A.1
  • B.their product
  • C.the bigger one
  • D.0
18.
Which is a common multiple of 2 and 3?
  • A.6
  • B.8
  • C.9
  • D.10
19.
Which number has exactly 3 factors?
  • A.6
  • B.8
  • C.9
  • D.10
20.
Which of these is NOT prime?
  • A.29
  • B.31
  • C.33
  • D.37

Answer Key

Section A — Multiple Choice (1 mark each)
  1. (B) 4
  2. (C) neither
  3. (A) 4, 8, 12, 16
  4. (A) 2, 3, 5, 7
  5. (B) 6
  6. (C) 5
  7. (A) 27
  8. (B) 3
  9. (B) 35
  10. (A) 2
  11. (A) Highest Common Factor
  12. (B) 4
  13. (B) 4
  14. (B) 11
  15. (B) 15
Section B — Challenge / Olympiad (2 marks each)
  1. (A) 5
  2. (A) 1
  3. (A) 6
  4. (C) 9
  5. (C) 33
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