Grade 4 - Composite and Prime numbers

Front

What is a prime number?

Back

A prime number is a whole number greater than 1 that has exactly two distinct positive divisors: 1 and itself.

Front

What is a composite number?

Back

A composite number is a counting number greater than 1 that has more than two factors.

Front

Identify a prime number: 2, 3, 4, 5.

Back

2, 3, and 5 are prime numbers; 4 is not.

Front

Identify a composite number: 6, 7, 8, 9.

Back

6, 8, and 9 are composite numbers; 7 is not.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

What is the largest prime number less than 10?

Back

The largest prime number less than 10 is 7.

Front

What is a factor?

Back

A factor is a whole number that can be divided evenly into another number.

Front

List the factors of 10.

Back

The factors of 10 are 1, 2, 5, and 10.

Front

Which number is NOT a factor of 12? 2, 3, 4, 5.

Back

5 is not a factor of 12.

Front

What do you call a whole number greater than 1 that has only two factors, 1 and itself?

Back

A prime number.