If the number formed by the last three digits is divisible by 8.
This requires that:
if the digit in the hundreds place is even, the last two digits must form a number divisible by 8
and
if the digit in the hundreds place is odd, the last two digits must form a number divisible by 4 but not by 8.
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If the last 3 digits are divisible by 8, the number is divisible by 8.
If the number formed by the last three digits is divisible by 8. Alternatively, if the number is divisible by 2, the quotient is divisible by 2 and that quotient is divisible by 2.
If you have a few different numbers that you are using, divide them each by 8 and if you get a whole number, that number is divisible. If you are trying to figure out what is divisible by 8, you can use a divisibility test.A number is divisible by 8 if:the number formed by the last three digits is divisible by 8.So, an example of this would be:7, 120.This number is divisible by 8 because 120 (the last 3 digits) is divisible by 8!
Because 8 is 2 cubed, you can test if a number is divisible by 8 by dividing it by 2 three times. If the number you reach is an integer, then the number is divisible by 8. For example, 72/2 = 36/2 = 18/2 = 9. Therefore, 72 is divisible by 8. For very large numbers, if the last three digits are divisible by 8, the number itself is divisible by 8.
Not always for example, 36 is not divisible by 8 but it is divisible by 2 and 4.