Divisibility and Factors

A number is divisible by 2 if...

• the last digit is 0
• the last digit is even
• the last digit is a 5 or 0

Tags

CCSS.2.OA.C.3

A number is divisible by 5 if...

• the last digit is even
• the last digit is 0
• the last digit is 5 or 0

Tags

CCSS.4.OA.B.4

A number is divisible by 10 if...

• the last digit is 0
• the sum of the digits is divisible by 3
• the last digit is 5 or 0

Tags

CCSS.4.OA.B.4

A number is divisible by 3 if...

• the sum of the digits is divisible by 9
• the sum of digits is divisible by 3
• the last digit is even

Tags

CCSS.3.OA.D.9

A number is divisible by 6 if...

• the sum of the digits is divisible by 3
• the last digit is 0
• the number is divisible by 3 AND 2

Tags

CCSS.4.OA.B.4

A number is divisible by 10 when...

• the last digit is 0 or 5
• the sum of the numbers is 0 
• the last digit is 0

Tags

CCSS.3.OA.D.9

A number is divisible by 9 if...

• the sum of the digits is divisible by 3
• number is divisible by 3 and 2
• sum of digits is divisible by 9

Tags

CCSS.3.OA.D.9

Is 9 a factor of 54?

• yes
• no

Tags

CCSS.4.OA.B.4

Is 5 a factor of 27?

• yes
• no

Tags

CCSS.4.OA.B.4

The factors of 27 are

• 1 x 27, 3 x 9
• 1, 3, 9, 27
• 1 3 9 27

Tags

CCSS.4.OA.B.4