Is 405 divisible by 3? In other words, if you divide 405 by 3, will you get a whole number with no remainder?
Of course, you could use a calculator to find out if 405 is divisible by 3, but what fun would that be?
To find out if 405 is divisible by 3, we will add up the numbers that make 405 as follows: 4 + 0 + 5 = 9
We know that if the sum of the numbers that make up 405 is divisible by 3, then 405 is divisible by 3.
Since the sum of the digits in 405 is divisible by 3, 405 is also divisible by 3. Thus, the answer to the question "Is 405 divisible by 3?" is as follows:
Yes
Note: If you divide 405 by 3, you get 135 which is a whole number.
Divisible by 3?
Do you need to check another number? Enter a number below to see if it is divisible by 3.