Factors and Multiples Practice

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number. For example, the factors of 12 are 1, 2, 3, 4, 6, and 12.

Front

What are multiples?

Back

Multiples are the result of multiplying a number by an integer. For example, the first four multiples of 3 are 3, 6, 9, and 12.

Front

Is 1 a factor of every number?

Back

Yes, 1 is a factor of every number because any number multiplied by 1 equals itself.

Front

What is the prime number?

Back

A prime number is a number greater than 1 that has no positive divisors other than 1 and itself. For example, 2, 3, 5, and 7 are prime numbers.

Front

List the factors of 15.

Back

The factors of 15 are 1, 3, 5, and 15.

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) of two or more numbers is the smallest number that is a multiple of each of the numbers. For example, the LCM of 4 and 5 is 20.

Front

What is the greatest common factor (GCF)?

Back

The greatest common factor (GCF) of two or more numbers is the largest number that divides all of them without leaving a remainder. For example, the GCF of 8 and 12 is 4.

Front

Is 22 a multiple of 7?

Back

No, 22 is not a multiple of 7. The multiples of 7 are 7, 14, 21, 28, etc.

Front

True or False: 2 is a prime number.

Back

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

Front

What are the first four multiples of 5?

Back

The first four multiples of 5 are 5, 10, 15, and 20.