Easily test if any number is evenly divisible by 8
Example
Is 2378273472 divisible by 8?
Yes
Step 1
Identify the hundreds place digit
4
If even:
Step 2
Divide the last two digits by 8
72 / 8 = 9
Step 3
The entire number is evenly divisible by 8 if the result of step 2 is a whole number.
Yes
If odd:
Example 2378273576
Step 4
Subtract 4 from the last two digits
76 - 4 = 72
Step 5
Divide the result of step 4 by 8
72 / 8 = 9
Step 6
The original number is evenly divisible by 8 if the result of step 5 is a whole number.
Yes