Prime and Composite Numbers
Math ⇒ Number and Operations
Prime and Composite Numbers starts at 6 and continues till grade 12.
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See sample questions for grade 8
Explain why 15 is a composite number.
Explain why 2 is considered a prime number.
Explain why 23 is a prime number.
Explain why 49 is a composite number.
How many prime numbers are there between 1 and 20?
List all the prime numbers between 10 and 30.
What is the definition of a composite number?
What is the largest prime number less than 50?
Which of the following is NOT a composite number?
(1) 4
(2) 6
(3) 9
(4) 13
Which of the following numbers is a composite number?
(1) 17
(2) 19
(3) 21
(4) 23
Which of the following numbers is a composite number?
(1) 2
(2) 3
(3) 4
(4) 5
Which of the following numbers is a prime number?
(1) 21
(2) 29
(3) 33
(4) 39
Fill in the blank: The number 1 is _______ prime nor composite.
Fill in the blank: The number 15 is a _______ number.
Fill in the blank: The number 17 has exactly _______ positive divisors.
Fill in the blank: The number 2 is the only _______ prime number.
Is 1 a prime number?
Is 121 a prime number?
Is 143 a composite number?
Is 51 a composite number?
