Definitions [5]
Rule
A number is divisible by 2 if it has any of the digits 0, 2, 4, 6, or 8 in its ones place.
Rule
A number is divisible by 5 if the digit in its units (ones) place is either 0 or 5.
Rule
If the sum of the digits in a number is divisible by 3, then the number is divisible by 3.
Rule
A number is divisible by 4 if the last two digits of the given number are divisible by 4.
Note: If the last two digits of a number are “00”, then it is also divisible by 4.
Rule
A number is divisible by 9 if the sum of all its digits is also divisible by 9.
