Integer - is a whole number, Positive integer - is a whole number above zero, Negative integer - is a whole number below zero, zero - is an integer but it is not positive or negative, The symbol > - means 'greater than', The symbol < - means 'less than', When adding a positive integer, - move right along the number line, When adding a negative integer, - move left along the number line, When subtracting a positive integer, - move left along the number line., When subtracting a negative integer, - move right along the number line., To add a positive integer, - subtract its opposite integer., To subtract a negative integer, - add its opposite integer.,

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