A natural number is divisible by 3 if and only if the number obtained by adding all its digits is divisible by 3.
Example: Is 150 divisible by 3?
Add all the digits in the given number i.e., 1 + 5 + 0 = 6,
Now, 6 is divisible by 3.
Therefore, the given number 150 is also divisible by 3.
Example: Is 235 divisible by 3?
Add all the digits in the given number i.e., 2 + 3 + 5 = 10,
Now, 10 is not divisible by 3.
Therefore, the given number 235 is not divisible by 3.
Directions: Chose the correct answer. Also write at least ten examples of your own.
