Divisibility + Factors

How do you know if a number is divisible by 2?

• it has a 2 as the last digit.

• It has an even number as the last digit.

• It has a 5 or a 0 as the last digit.

• If you add all the digits up the sum is divisible by 2.

Tags

CCSS.3.OA.D.9

True or False- If a number is divisible by 10, it is also divisible by 5?

• True

• False

Tags

CCSS.3.OA.D.9

Is 20 divisible by 5?

• no

• yes

Tags

CCSS.4.OA.B.4

Is 12 a factor of 4?

• no

• yes

Tags

CCSS.4.OA.B.4

What are the factors of 24?

• 1,2,3,4,6,12,24

• 1,2,3,4,6,8,12,24

• 1,2,12,24

• 1,2,3,4,6,8,24

Tags

CCSS.4.OA.B.4

List all of the factors of 27

• 1,27

• 1,3,9,27

• 1,3,9,12,27

Tags

CCSS.4.OA.B.4

Which of the following numbers is divisible by 5?

• 60

• 15

• 42

• 60 and 15

Tags

CCSS.4.OA.B.4

What are the factors of 14?

• 1, 14

• 2, 7

• 1, 2, 7, 14

• 1, 2, 3, 7, 11, 14

Tags

CCSS.4.OA.B.4

What are the common factor for 12 and 20?

• 1, 2

• 1, 2, 4

• 1, 2, 5

Tags

CCSS.4.OA.B.4

Factors are

• even numbers

• odd numbers

• numbers that we multiply to get a product.

• an answer when you divide

Tags

CCSS.4.OA.B.4