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ddunback
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If the last digit is even (# ends in a 0,2,4,6, or 8) number is divisible by
2

If the sum of the digits is divisible by 3, then the # is also... which number is this
3

If the last two digits form a number divisible by 4 then it is also ... which number is this
4

If the last digit is 5 or 0 , then the # is divisible by
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If the # is divisible by both 3 and 2 (#is even and rule for 3 is satisfied) # is divisible by
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Take last digit double it and subtract that from the rest of the number; if answer is divisible by 7 (including 0) original # is to...what is this #
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If last 3 digits form # divisible by 8 then so is the original #... what is the #
8

If the sum of the digits is divisible by 9 # is to...what is this #
9

If # ends in 0 its divisible by
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Alternately add and subtract digits from left to right include 0. if result is divisible by 11 so is the original #...what is this #
11

If the # is divisible by both 3 and 4 it is divisible also by
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Delete the last digit from # then subtract 9 tines the deleted digit from remaining #, if what is left is divisible by 13 so is the original #...what # is this
13

