Chapter 5 · Class 6 CBSE · Worksheet

Prime Numbers & Factorization Worksheet — Class 6 CBSE Maths

Download a free printable worksheet with 30 questions at 3 difficulty levels. Includes full answer key.

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30 questions (Easy + Medium + Hard) with answer key. Fresh set generated daily.

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Sample Questions — Prime Numbers & Factorization

Here are 8 sample questions from this worksheet. Download the full PDF for all 30 questions.

Q1.Which of the following statements about factors is TRUE?

A.A) Every number has exactly two factors.

B.B) A factor of a number is always greater than or equal to the number itself.

C.C) 1 is a factor of every number.

D.D) The number of factors of a prime number is more than two.

Difficulty: Easy

Q2.Which of the following numbers is a prime number?

A.A) 9

B.B) 15

C.C) 21

D.D) 13

Difficulty: Easy

Q3.Which of the following numbers is a composite number?

A.A) 2

B.B) 3

C.C) 4

D.D) 5

Difficulty: Easy

Q4.Ravi tried to find the prime factorization of 30. He wrote: 30 = 2 × 3 × 5. Is Ravi's factorization correct?

A.A) Yes, because 2, 3, and 5 are all prime numbers and their product is 30.

B.B) No, because he forgot to include 1 in the factorization.

C.C) No, because 30 is an even number, so it must only have 2 as a prime factor.

D.D) No, because the order of prime factors should be from largest to smallest.

Difficulty: Easy

Q5.Which of the following statements about the number 1 is TRUE?

A.A) 1 is the smallest prime number.

B.B) 1 is the smallest composite number.

C.C) 1 is neither a prime nor a composite number.

D.D) 1 is a prime number because it has only one factor (itself).

Difficulty: Easy

Q6.The only even number that is also a prime number is ______.

A.A) 0

B.B) 2

C.C) 4

D.D) 6

Difficulty: Easy

Q7.What are all the factors of the number 18?

A.A) 1, 2, 3, 6, 9, 18

B.B) 1, 2, 3, 4, 6, 9, 18

C.C) 2, 3, 6, 9, 18

D.D) 1, 18

Difficulty: Easy

Q8.Two numbers are called co-prime if their only common factor is 1. Which of the following pairs of numbers is co-prime?

A.A) (4, 8)

B.B) (7, 21)

C.C) (12, 18)

D.D) (10, 13)

Difficulty: Easy

Answer Key — Sample Questions+

Q1:C) 1 is a factor of every number.

Q2:D) 13

Q3:C) 4

Q4:A) Yes, because 2, 3, and 5 are all prime numbers and their product is 30.

Q5:C) 1 is neither a prime nor a composite number.

Q6:B) 2

Q7:A) 1, 2, 3, 6, 9, 18

Q8:D) (10, 13)

Download the full PDF for all 30 answers with step-by-step solutions.

About This Worksheet

Topic	Prime Numbers & Factorization
Board	CBSE
Class	6
Total Questions	30 (10 Easy + 10 Medium + 10 Hard)
Answer Key	Included
Price	Free

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Frequently Asked Questions

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Each SparkEd worksheet for Prime Numbers & Factorization contains 30 questions — 10 easy, 10 medium, and 10 hard. A fresh set is generated daily so you never repeat the same sheet.

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