1.



Any even number (a number ending in 0, 2, 4, 6, or 8) can be divided evenly by 2.



2.



Any number that ends in 0 can be divided evenly by 10.



3.



Any number that ends in 0 or 5 can be divided evenly by 5.



4.



If the last TWO digits can be divided evenly by 4, then so can the entire number.



5.



If the last THREE digits can be divided evenly by 8, then so can the entire number.



6.



Add up the digits of the number. If that sum can be divided evenly by 3, then so can the entire number.



7.



Add up the digits of the number. If that sum can be divided evenly by 9, then so can the entire number.



8.



If the number is even and if the sum of the digits can be divided evenly by 3, then the entire number can be divided evenly by 6.


