Exploring Factors and the Greatest Common Factor

The video tutorial covers the concept of factors, demonstrating how to find factors of a number using examples. It introduces the greatest common factor (GCF), explaining its definition and significance. The tutorial provides methods to find the GCF, including listing factors and using prime factorization. It concludes with instructions for an assignment on practicing GCF using IXL.

What are factors?

• Numbers that are multiplied together to get another number

• Numbers that are added together to get another number

• Numbers that are divided to get another number

• Numbers that are subtracted to get another number

Tags

CCSS.4.OA.B.4

Which of the following is a factor pair of 12?

• 1 and 11

• 3 and 5

• 4 and 8

• 2 and 6

Tags

CCSS.4.OA.B.4

What is the purpose of using a multiplication chart?

• To find the sum of numbers

• To find the factors of a number

• To find the quotient of numbers

• To find the difference between numbers

Tags

CCSS.3.OA.A.1

What is the greatest common factor (GCF)?

• The product of all factors of a number

• The sum of all factors of a number

• The largest factor that two or more numbers have in common

• The smallest factor that two or more numbers have in common

What is the GCF of 16 and 20?

• 8

• 6

• 4

• 2

What is the GCF of 14 and 24?

• 2

• 1

• 4

• 3

What is the GCF of 15 and 27?

• 9

• 3

• 5

• 1

What is the GCF of 18 and 30?

• 2

• 3

• 9

• 6

What is the prime factorization of 18?

• 3 x 3 x 3

• 2 x 2 x 3

• 2 x 2 x 2

• 2 x 3 x 3

What is the prime factorization of 30?

• 3 x 3 x 5

• 2 x 5 x 5

• 2 x 3 x 3

• 2 x 3 x 5