Is 399 divisible by 3? In other words, if you divide 399 by 3, will you get a whole number with no remainder?
Of course, you could use a calculator to find out if 399 is divisible by 3, but what fun would that be?
To find out if 399 is divisible by 3, we will add up the numbers that make 399 as follows: 3 + 9 + 9 = 21
We know that if the sum of the numbers that make up 399 is divisible by 3, then 399 is divisible by 3.
Since the sum of the digits in 399 is divisible by 3, 399 is also divisible by 3. Thus, the answer to the question "Is 399 divisible by 3?" is as follows:
Yes
Note: If you divide 399 by 3, you get 133 which is a whole number.
Divisible by 3?
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