Multiples and Factors

Front

What is a multiple?

Back

A multiple of a number is the result of multiplying that number by an integer. For example, multiples of 3 are 3, 6, 9, 12, etc.

Front

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder. For example, factors of 12 are 1, 2, 3, 4, 6, and 12.

Front

How can you tell if a number is divisible by 4?

Back

A number is divisible by 4 if the last two digits form a number that is divisible by 4. For example, 932 is divisible by 4 because 32 is divisible by 4.

Front

What are the factors of 15?

Back

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

Front

What is the smallest 2-digit prime number?

Back

The smallest 2-digit prime number is 11.

Front

Which of the following is NOT a factor of 9? 0, 1, 3, 9

Back

0 is NOT a factor of 9.

Front

Which number is NOT prime? 3, 7, 17, 21

Back

21 is NOT a prime number.

Front

What is a prime number?

Back

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

Front

What is the greatest common factor (GCF)?

Back

The GCF of two or more numbers is the largest number that divides all of them without leaving a remainder.

Front

What is the least common multiple (LCM)?

Back

The LCM of two or more numbers is the smallest number that is a multiple of all of them.