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 7
Explain why 11 is a prime number.
Explain why 15 is a composite number.
Explain why 2 is considered a prime number.
Explain why 49 is not a prime number.
List all the composite numbers between 1 and 10.
List all the prime numbers between 10 and 20.
What is the definition of a composite number?
A student claims that every number ending in 5 is a composite number. Is this claim correct? Justify your answer.
Which of the following is a prime number?
(1) 49
(2) 53
(3) 55
(4) 57
Which of the following is a prime number?
(1) 51
(2) 53
(3) 55
(4) 57
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
Fill in the blank: A prime number has exactly _______ positive divisors.
Fill in the blank: The number 1 is _______ a prime number.
Fill in the blank: The number 17 is a _______ number.
Fill in the blank: The number 2 is the only _______ prime number.
Is 1 a prime number?
Is 100 a prime number?
Is 37 a prime number?
Is 51 a composite number?
