What is the greatest negative integer?
The answer is -1.
A negative integer is an integer to the left of zero on the number line. It is less than zero. So the greatest negative integer is -1.
The smallest positive integer is 1. 1 is the multiplicative identity; ie anything times 1 is itself. The greatest negative integer is the most positive negative integer which is -1. Therefore the product of the greatest negative integer and the smallest positive integer is the greatest negative integer which is -1.
Any positive integer plus any negative integer will always equal an integer. The results will be either a positive integer, a negative integer or zero. it depends which is bigger. if the positive integer is bigger the answer will be positive. and if the negative integer is bigger the answer will be negative.