Factors and Multiples Review 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 numbers that can be divided by a certain number without leaving a remainder. For example, the multiples of 3 are 3, 6, 9, 12, 15, etc.

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. For example, 2, 3, 5, and 7 are prime numbers.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

True or False: 1 is a prime number.

Back

False. 1 is not considered a prime number.

Front

What is the greatest common factor (GCF)?

Back

The GCF is the largest number that can divide two or more numbers without leaving a remainder. For example, the GCF of 8 and 12 is 4.

Front

What is the least common multiple (LCM)?

Back

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

Front

What are the factors of 15?

Back

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

Front

Which number is a factor of 42? 5, 10, 9, or 7?

Back

7 is a factor of 42.

Front

What is the prime factorization of 28?

Back

The prime factorization of 28 is 2 x 2 x 7 or 2² x 7.