To check if a number is divisible by 4, what should you look at?

To determine if a number is divisible by 4, you only need to examine the last two digits of that number. This is based on the property of divisibility for 4, which states that if the number formed by the last two digits of a larger number is divisible by 4, then the entire number is also divisible by 4.

For example, consider the number 312. The last two digits are 12. Since 12 can be divided by 4 (12 ÷ 4 = 3), we know that 312 is also divisible by 4. In contrast, checking the entire number or just the last digit would not provide the necessary information to confirm divisibility by 4, since it specifically requires the two-digit combination.

Thus, focusing exclusively on the last two digits is the most effective way to verify divisibility by 4.