Greatest Common Factors and Prime Numbers

Front

GCF stands for...

Back

greatest common factor

Front

What is the least common multiple (LCM) of 12 and 8?

Back

24

Front

What is the least common multiple (LCM) of 6 and 8?

Back

24

Front

What is the GCF of 28 and 40?

Back

4

Front

Find the LCM of 42 and 66.

Back

462

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.

Tags

CCSS.4.OA.B.4

Front

List the first five prime numbers.

Back

2, 3, 5, 7, 11

Tags

CCSS.4.OA.B.4

Front

What is the relationship between GCF and LCM?

Back

The product of the GCF and LCM of two numbers is equal to the product of the numbers.

Front

How do you find the GCF of two numbers?

Back

List the factors of each number and identify the largest factor they have in common.

Front

How do you find the LCM of two numbers?

Back

List the multiples of each number and identify the smallest multiple they have in common.