(0:01)Divisibility Definition: A number is divisible by another if it divides exactly with no remainder.

(0:45)Divisibility by 2, 4 and 8: A number is divisible by 2 if its last digit is even; divisible by 4 if its last two digits form a number divisible by 4; and divisible by 8 if its last three digits form a number divisible by 8.

(1:34)Divisibility by 3, 6, and 9: A number is divisible by 3 if the sum of its digits is divisible by 3; divisible by 9 if the sum of its digits is divisible by 9; and divisible by 6 if it is divisible by both 2 and 3.

(2:52)Divisibility Rules for 5 and 10: A number is divisible by 5 if its last digit is 0 or 5, and divisible by 10 if it ends in 0.