UK Primary (3-6)
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Primes and Composites

Interactive practice questions

Which ONE of the following describes a prime number?

A natural number that has a factor of $1$1.

A

A natural number that has at most two factors: itself and $1$1.

B

A natural number greater than $1$1 that has exactly two factors: itself and $1$1.

C

A natural number greater than $1$1 that has more than two factors.

D

A natural number that has a factor of $1$1.

A

A natural number that has at most two factors: itself and $1$1.

B

A natural number greater than $1$1 that has exactly two factors: itself and $1$1.

C

A natural number greater than $1$1 that has more than two factors.

D
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Which ONE of the following describes a composite number?

True or False?

$54$54 is a prime number.

True or False?

79 is a prime number.

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