A nuber added to its additive opposite equals 0for example: 8 + -8 = 0 N plus or minus zero equals N; the numer doesn't changefor example: 8 + 0 = 8 | 8 - 0 = 8 N minus N equals zero for example: 8 - 8 = 0 N multiplied by zero equals zero for example: 8 x 0 = 0 zero divided by N equals zero for example: 0 / 8 = 0 N divided zero is imossible for example: 8 / 0 = ERROR, as many zeros as you put it'll still equal zero