Factors and GCF

What is a factor?

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

• A factor is a number that is multiplied by another number to get a product.

• A factor is a decimal number that can be rounded to the nearest whole number.

• A factor is a number that is always greater than the number itself.

Tags

CCSS.4.OA.B.4

What are the factors of 12?

• 1, 2, 3, 4, 6, 12

• 1, 2, 3, 5, 6

• 2, 3, 4, 5, 6

• 1, 2, 4, 8, 12

Tags

CCSS.4.OA.B.4

What is the GCF of 30 and 45?

• 10

• 12

• 15

• 20

What is a factor pair?

• A pair of numbers that add up to a given number.

• A pair of numbers that, when multiplied together, equal a given number.

• A pair of numbers that are both prime numbers.

• A pair of numbers that are both even numbers.

Tags

CCSS.4.OA.B.4

What is the greatest common factor (GCF)?

• The smallest number that divides two or more numbers without leaving a remainder.

• The largest number that divides two or more numbers without leaving a remainder.

• The sum of two or more numbers.

• The product of two or more numbers.

What is the GCF of 8 and 12?

• 2

• 3

• 4

• 6

List all the factors of 24.

• 1, 2, 3, 4, 6, 8, 12, 24

• 1, 2, 4, 8, 16

• 2, 3, 5, 6, 12

• 1, 3, 5, 7, 12

Tags

CCSS.4.OA.B.4

Can a number have more than one GCF with different numbers?

• Yes, a number can have multiple GCFs depending on the context.

• No, the GCF is unique for any pair of numbers.

• It depends on the numbers involved.

• A number can have a GCF with itself only.

What is the GCF of 12 and 18?

• 4

• 6

• 8

• 10

Which number is NOT a factor of 42?

• 6

• 7

• 22

• 14

Tags

CCSS.4.OA.B.4