How can we tell if a number is divisible by 4?

a. the last two digits of the number are divisible by 4 b. the sum of the digits is 4 c. the sum of the digits is divisible by 4 d. the last digit is divisible by 4

A is the correct answer. We all know that 100 is divisible by 4, so any multiple of 100 is also divisible by 4 (ex. 500, 1500, etc.)z Therefore, any number can be divisible by 4 regardless of what is in the hundreds place and above. What counts is the last two digits of the number, the tens and ones places. For example, let's look at 334 and 324. 34 is not divisible by 4, therefore 334 is not divisible by 4. 24 is divisible by 4, therefore 324 is divisible by 4. Check in a calculator for proof!

A, the last two digits of the number are divisible by 4