Divisibility Rule for 3

3--- all whole numbers who`s sum are divisible by 3.

Question:

Is the 9345 divisible by 3?

Yes! because 9+3+4+5=21 and 21 is multiple by 3. So 9345 is divisible by 3.

Is this divisible by 35678.

No! because 5+6+7+8=26 and 26 is not multiple by 3. So 5678 is not divisible by 3.

Here is the picture!!!!

Video!!!!