Sean says that to add a number to –100 and still have –100 is to add zero. candice says that she can add two numbers to –100 and still have –100. who is correct and why? sean is correct because adding any numbers other than zero will result in a different number. candice is correct because if the two numbers total 100, then the sum will be –100. they are both correct because adding two numbers that are opposites is equivalent to adding zero. neither is correct because adding any number to –100 will result in a different number.