Worksheet: Prime Time | Mathematics (Maths) Class 6 PDF Download

Multiple Choice Questions (MCQs)

Q1: Which of the following is a prime number?
(a) 49
(b) 51
(c) 53
(d) 55

Q2: What is the first common multiple of 3 and 5?
(a) 10
(b) 12
(c) 15
(d) 20

Q3: How many prime numbers are there between 1 and 10?
(a) 2
(b) 3
(c) 4
(d) 5

Q4: Which pair of numbers is co-prime?
(a) 12 and 18
(b) 14 and 21
(c) 8 and 9
(d) 10 and 20

Q5: The smallest number that is a multiple of both 3 and 4 is:
(a) 6
(b) 9
(c) 12
(d) 15

Fill in the Blanks

Q1: The smallest prime number is _____.

Q2: Numbers that have only two factors, 1 and the number itself, are called _____.

Q3: The common multiples of 3 and 5 within the first 100 numbers are _____, _____, and _____.

Q4: The Sieve of _____ is a method used to find all prime numbers up to a certain number.

Q5: Numbers that are neither prime nor composite are _____.

True or False

Q1: 9 is a prime number.

Q2: The number 2 is the only even prime number.

Q3: All multiples of 4 are also multiples of 2.

Q4: If a number is divisible by 8, it is also divisible by 4.

Q5: The number 37 is a composite number.

Short Answer Questions

Q1: List all the prime numbers between 10 and 20.

Q2: Find the common factors of 24 and 36.

Q3: What is the prime factorization of 72?

Q4: Identify two numbers between 1 and 50 that are co-prime.

Q5: What is the smallest multiple of 5 that is also a multiple of 3?