Prime and composite

Front

What is a prime number?

Back

A prime number is a number that has exactly two distinct factors: 1 and itself.

Front

What is a composite number?

Back

A composite number is a number that has more than two factors.

Front

Is 21 a prime or composite number?

Back

Composite, because it has 4 factors: 1, 3, 7, and 21.

Front

List all the factors of 24.

Back

1, 2, 3, 4, 6, 8, 12, 24.

Front

Is 3 a factor of 26?

Back

No, because 26 cannot be divided evenly by 3.

Front

What does it mean for a number to be a factor?

Back

A factor is a number that divides another number without leaving a remainder.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

What is the largest single-digit prime number?

Back

The largest single-digit prime number is 7.

Front

What is the difference between prime and composite numbers?

Back

Prime numbers have exactly two factors, while composite numbers have more than two factors.

Front

Is 1 a prime number?

Back

No, 1 is not a prime number because it has only one factor.