Divisibility Rules

What is the divisibility rule for 3?

• Add up the digits. The sum must be an even number

• The digits must add up to 9.

• The last digit must be a 3.

• Add up the digits. The sum must be a multiple of 3.

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 5?

• The digits must add up to 10.
• The last digit needs to be a 5 or 0.
• The last digit can only be a 5.
• The sum of the digits need to be divisible by 5.

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 4?

• The sum of the digits must be a multiple of 4

• The last two digits must form a number that is a multiple of 4

• The number must be divisible by 2 and 3.

• The number must end in 0, 2, or 4

Tags

CCSS.3.OA.D.9

A number is divisible by 10 if

• It is even

• It ends in 0

• It ends in 0 or 5

• The sum of the digits is a multiple of 10

Tags

CCSS.4.OA.B.4

How do you know if a number is divisible by 12?

• The sum of the digits must be a multiple of 12

• If it ends in 3, 6, or 9

• If it is divisible by 3 and 4

• If it is divisible by 2 or 3

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2

What is the divisibility rule of 9?

• The sum of the digits is a number divisible by 3

• The sum of the digits is a number divisible by 9

• The last two digits form a number divisible by 3

• The last digit is zero

Tags

CCSS.5.OA.B.3

What is the divisibility rule for 6?

• It is divisible by 2 and 3

• It is divisible by 3 and 4

• It is divisible by 2 and 4

• The last digit is zero

Tags

CCSS.4.OA.B.4

What is the divisibility rule of 2?

• The sum of the digits equals a number divisible by 2

• The last digit is 0

• The last two digits form a number that is divisible by 2

• The last digit is even

Tags

CCSS.4.OA.B.4

How do you know if a number is divisible by 8?

• If the sum of the numbers add up to 8

• If the last 3 digits form a number that is divisible by 8

• if the lat digit is an 8

• If the number is an even number

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 7?

• Add the digits of the number together and divide by 7

• If the last two digits are divisible by 7

• If you double the last digit and subtract from the rest of the number you get a multiple of 7

• Add up every third digit and subtract from the rest of the number

Tags

CCSS.5.OA.B.3