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Divisibility&Primes

QuestionAnswer
An integer is Divisibility by 2 if The integer is even
An integer is Divisibility by 3 if The sum of the integer's DIGITS is divisible by 3
An integer is Divisibility by 4 if Divisible by 2 twice, or if the LAST TWO digits are divisible by 4
An integer is Divisibility by 5 if Integer ends in a 5 or 0
An integer is Divisibility by 6 if Integer is divisible by BOTH 2 and 3
An integer is Divisibility by 7 if Only done through long division
An integer is Divisibility by 8 if Divisible by 2 THREE TIMES, or if last THREE digits are divisible by 8
An integer is Divisibility by 9 if The sum of the integers digits is divisible by 9
An integer is Divisibility by 10 if The integer ends in 0
Define factor Positive integer that divides evenly into an integer (also called divisors)
Define multiple A multiple of an integer is formed by multiplying that integer by any integer
Created by: cmdunn81 on 2012-12-26



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