Factors and Multiples

Front

What is a factor?

Back

A factor is a whole number that can be divided evenly into another number. For example, factors of 12 are 1, 2, 3, 4, 6, and 12.

Front

What is a multiple?

Back

A multiple is the result of multiplying a number by an integer. For example, multiples of 8 include 8, 16, 24, 32, etc.

Front

What are prime numbers?

Back

Prime numbers are natural numbers greater than 1 that have no positive divisors other than 1 and themselves. The first five prime numbers are 2, 3, 5, 7, and 11.

Front

Which of these is not a multiple of 8? 8, 16, 4, 24

Back

4 is not a multiple of 8.

Front

Which of these is not a factor of 12? 1, 2, 12, 24

Back

24 is not a factor of 12.

Front

List the first 5 prime numbers.

Back

2, 3, 5, 7, 11.

Front

Which number is a factor of 25? 1, 2, 10, 50

Back

1 is a factor of 25.

Front

Which number is a multiple of 11? 1, 12, 66, 35

Back

66 is a multiple of 11.

Front

What is the greatest common factor (GCF)?

Back

The GCF is the largest number that divides two or more numbers without leaving a remainder. For example, the GCF of 12 and 16 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.