Factors, Multiples, Prime and Composite

Front

What is a prime number?

Back

A prime number is a number greater than 1 that has no positive divisors other than 1 and itself.

Front

What is a composite number?

Back

A composite number is a number greater than 1 that has more than two positive divisors.

Front

Is 2 a prime number?

Back

Yes, 2 is a prime number because it can only be divided by 1 and 2.

Front

Is 4 a prime number?

Back

No, 4 is a composite number because it can be divided by 1, 2, and 4.

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number.

Front

What are multiples?

Back

Multiples are the result of multiplying a number by an integer.

Front

List the factors of 28.

Back

The factors of 28 are 1, 2, 4, 7, 14, and 28.

Front

What is the least common multiple (LCM) of 2 and 5?

Back

The LCM of 2 and 5 is 10.

Front

What is the greatest common factor (GCF) of 12 and 15?

Back

The GCF of 12 and 15 is 3.

Front

Is 51 a prime or composite number?

Back

51 is a composite number.