Factor Trees

Front

What is a factor?

Back

A factor is a number that divides another number evenly without leaving a remainder.

Front

What are prime numbers?

Back

Prime numbers are numbers greater than 1 that have no positive divisors other than 1 and themselves.

Front

List the factors of 10.

Back

1, 2, 5, 10

Front

What is a composite number?

Back

A composite number is a positive integer that has at least one positive divisor other than one or itself.

Front

What is the prime factorization of 12?

Back

2 x 2 x 3 or 2² x 3

Front

How do you find the factors of a number?

Back

To find the factors of a number, list all the integers that can be multiplied together to get that number.

Front

What is the missing factor of 15 if one factor is 3?

Back

5

Front

What are the factors of 24?

Back

1, 2, 3, 4, 6, 8, 12, 24

Front

What is the prime factorization of 18?

Back

2 x 3 x 3 or 2 x 3²

Front

If a number is even, what can you say about its factors?

Back

At least one of its factors will be even.