To calculate 10x10x10, enter 10 in the NUMBER box and 3 in the exponent or POWER box. A minus in front of the number will give a positive or negative result depending on whether the power is an even or an odd number. Even powers will give you a positive result whereas odd powers will give you a negative result. This is because a minus number times a minus number gives you a positive answer. If you put a minus in front of the power then you will get an inverse (i.e one divided by the number raised to that power. For example, if you put 2 in the numbers box and you put -3 in the power box you get 1/(2x2x2) = 1/8 = 0.125.