Factoring Integers: Problem 5
Factoring Integers: Problem 5
Rule 9:
To factor an integer, simply break the integer down into a group
of numbers whose product equals the original number. Factors are separated by multiplication signs. Note that the number 1 is the factor of every number. All factors of a number can be divided evenly into that number.
Problem 5: Is 3 a factor of 10? Why?
Answer. The factors of 10 are 
. 3 is not a factor. Another way to check to see whether 3 is a factor of 10 is to divide 10 by 3. If the answer is even (no decimal), it is a factor. If the answer is a decimal, 3 is not a factor of 10. Since 
, 3 is not a factor of 10.
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