Methods for division

Divisibility by 2: A number is divisible by 2, If its unit digit is any of 0,2,4,6,8
Example: 3436, 12, 4570 etc

Divisibility by 3: A number is divisible by 3 if the sum of its digits is divisible by 3.
Example: 324 as (3+2+4 = 9) so 9 is divisible by 3, hence 324 will be divisible by 3

Divisibility by 4: A number is divisible by 4 if the number formed by the last two digits is divisible by 4
Example: 2348 is divisible by 4 as the number formed by last two digits is 48 which is divisible by 4. So number 2348 is divisible by 4

Divisibility by 5: A number is divisible by 5 if its unit digit is either 0 or 5.

Divisibility by 6: A number is divisible by 6 if the number is divisible by both 2 and 3

Divisibility by 8: A number is divisible by 8 if the number formed by the last three digits is divisible by 8
Example: 2348360 is divisible by 8 as the number formed by last three digits is 360 which is divisible by 8. So number 2348360 is divisible by 8

Divisibility by 9: A number is divisible by 9, if the sum of its digits is divisible by 9.
Example: 13572 is divisible by 9 as sum of digits is (1+3+5+7+2 = 18), which is divisible by 9.

Divisibility by 10: A number is divisible by 10, if it ends with 0.

Divisibility by 11: A number is divisible by 11, if the difference of the sum of its digits at odd places and sum of digits at even places is either 0 or a number divisible by 11.

Example: 25795 is divisible by 11 as ((2+7+5)-(5+9) = 0)

Divisibility by 12: A number is divisible by 12 if it is divisible by both 4 and 3.

Divisibility by 14: A number is divisible by 12 if it is divisible by both 7 and 2.

Divisibility by 15: A number is divisible by 15 if it is divisible by both 5 and 3.

Divisibility by 16: A number is divisible by 16 if number formed by last 4 digits is divisible by 16.
Example: 886976 is divisible by 16 as last four digits 6976 are divisible by 16.

Divisibility by 24: A number is divisible by 24 if it is divisible by both 8 and 3.

Divisibility by 40: A number is divisible by 40 if it is divisible by both 8 and 5.

Divisibility by 80: A number is divisible by 80 if it is divisible by both 16 and 5.