Divisibility test by 3,4 and 9

What is the divisibility rule for 3?

• Add up the digits. The sum must be EVEN and divisible by 3.

• The digits must add up to 9.

• The last digit must be a 3.

• Add up the digits. The sum must be divisible by 3.

252 is divisible by 9 because:

• The digits add up to 18.

• The sum of the digits is divisible by 9.

• It's even and the sum of the digits is divisible by 3.

• The sum of the digits is even.

Is 81 divisible by 3?

• Yes
• No

252 is divisible by 9 because:

• The number is divisible by 2 and 3

• The sum of the digits is a multiple of 9.

• The sum of the digits is a multiple of 3

• The sum of the digits is even.

Is 3501804 divisible by 4?

• Yes

• No

If last two digits of a number is divisible by 4, then the number is also divisible by 4.

• true

• false

which is the only even prime number

• 6

• 24

• 2

• 8

• 14

Is 1,284,604 divisible by 2?

• Yes, because it has more than six digits

• No, because 4 is an odd number

• Yes, because 4 is an even number

• No, because the number is very long

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.

Which of the following Number is divisible by 2 ?

• If the last digit of the number is only 2.

• If the last digit of the number is 2 ,4 , 6 , 8 ,and 0

• If the sum of all digits is divisible by 2.

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