A given natural number is divisible by 4 if and only if ...?
the last digit is divisible by 4
the last two digits are divisible by 4
the sum of the last two digits is divisible by 4
the number created from the last two digits is divisible by 4
The last two digits form a number that is divisible by 4; 40,832: 32 is divisible by 4. If the tens digit is even, the ones digit must be 0, 4, or 8. If the tens digit is odd, the ones digit must be 2 or 6. 40,832: 3 is odd, and the last digit is 2. Twice the tens digit, plus the ones digit is divisible by 4.