Integer Addition; Range (-9) to (+9) (D)
Standard form is basically the same with out the brackets, but if its a positive number only put one positive symbol, not two but one.
(-2) + (+3)
(-4) + (-3)
(+1) + (+9)
(-) is the negative sign, so when you see that symbol beside the number it will be a negative number.
(+) is the positive sign, so when you see that symbol beside the number it will be a positive number.