Check if a number is a multiple of 3

You can know whether a number is a multiple of 3 by adding all the digits of the number, and checking if the sum is a multiple of 3 (which should be much easier).

Take the number 1052 for example. The sum of digits is 8 (1+0+5+2), which is not a multiple of 3. Therefore, neither is 1052.

posted on 2006-04-07 by goodfellah | comments(2) | save

tags: school, numbers, math