Divisibility+Rules

=CONCEPT: Divisibility Rules for 2,3,4,5,6,8,9,10=

**Under Construction Still!!**

**Divisibility Rules**

 * For 2:** the last digit must be even (0,2,4,6,or 8)
 * For 4**: since every multiple of 100 is divisible by 4, we only need to look at the last 2 digits of the number! If the last two digits are divisible by 4, the whole number is!!
 * For 8**: since every multiple of 1 000 is divisible by 8 (125 times!), we only need to look at the last 3 digits of the number. This can be done by dividing those numbers by 8, or you can divide them by 2 three times! If you can do this, the whole number is divisible by 8


 * For 5**: the last digit must be a 5 or a 0
 * For 10**: the last digit must be a 0


 * For 3**: add up all the digits in the number! If the sum of the digits are 3, 6, or 9, the whole number is divisible by 3!!
 * For 9**: add up all the digits in the number! If the sum of the digits are 9, the whole number is divisible by 9!! (This is why Mrs. Bourne is your role model!!! :))


 * For 6**: the number must be even (which is the rule for 2) AND the digits must add up to 3, 6, or 9 (which is the rule for 3). Funny how that works, as 2 times 3 is equal to 6!!!!!!!!