Divisibility Rules

What is 39348 divisible by? Select all that apply.

• 2

• 3

• 4

• 9

• 11

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.

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

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

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

How do you know if a number is divisible by 11?

• Add every second digit. Add every other digit. The difference has to be a multiple of 11 or 0

• Add up all the digits and it has to be a multiple of 11

• There is no divisibility rule

• Subtract the last 3 digits from the rest of the number

What is the smallest digit that must be written on the blank to make

5 , _ 67 divisible by 11?

What is 21423 divisible by? Select all that apply.

• 2

• 3

• 6

• 9

• 11

What is 550 divisible by?

Select all that apply.

• 2

• 3

• 7

• 10

• 11

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