Question

how to test divisibility by 8​

Answer 1

If the last three digits of a number are divisible by 8, then the number is completely divisible by 8. Example: Take number 24344. Consider the last two digits i.e. 344. As 344 is divisible by 8, the original number 24344 is also divisible by 8.

Answer 2

Answer:

The Rule for 8: If the last three digits of a whole number are divisible by 8, then the entire number is divisible by 8. For this rule, we will look at the last three digits of the number: 456,791,824.

Every number is (a multiple of 1000) + (last three digits). Since 1000= 8\times125, every number is (a multiple of 8) + (last three digits). This means that the whole number is divisible by 8 if the last three digits represent a number that is divisible by 8.