Factor Trees

Front

What is a factor?

Back

A factor is a whole number that can be divided evenly into another number.

Tags

CCSS.4.OA.B.4

Front

What is a factor tree?

Back

A factor tree is a diagram that shows the prime factors of a number.

Front

What are prime numbers?

Back

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

Tags

CCSS.4.OA.B.4

Front

What is the prime factorization of 18?

Back

2 x 3 x 3 or 2 x 3².

Front

What is the prime factorization of 24?

Back

2 x 2 x 2 x 3 or 2³ x 3.

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.

Front

How do you find the GCF of 16 and 24?

Back

The GCF of 16 and 24 is 8.

Front

What is the least common multiple (LCM)?

Back

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

Front

How do you find the LCM of 18 and 27?

Back

The LCM of 18 and 27 is 54.

Front

What is a composite number?

Back

A composite number is a whole number greater than 1 that is not prime, meaning it has factors other than 1 and itself.

Tags

CCSS.4.OA.B.4