Divisibility Rules

Evan H, Reid R, and Riley S.

1

Any number can be divided by 1. for instants 5,798,888 or 998,3336,664,056,


2

If it ends with an even number it is divisible by 2. for instants, 2,754 or 7,678




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3

The rule is...

You must add up all the digits and if it divisible by three then the starting number is divisible by 3.

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4

Whole numbers are divisible by 4. If then can the number can be formed by the last 2 individual digits is evenly divisible by 4.
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5

Any number that ends with a 5 or 0 is divisible by 5


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6

To be divisible by six the number has to be divisible by 2 and 3. Ex. 1986 AND 8760


9

A number is divisible by 9 if the sum of its digits is divisible by 9. Ex. 2,880 and 3,564


10

If the number ends with a zero it is divisible by 10.


Practice sites

this one everyone probably used before http://ixl.com


http://mathslice.com