To use this calculator simply enter a number and then raise it to a power. For example, if you wanted to calculate 103 enter 10 in the numbers box and 3 in the exponent or power box. The calculator will then compute 10x10x10 and give you the answer 1000.If you put a minus in front of the number then you will get 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 2-3 which is equal to 1/2x2x2 = 1/8 = 0.125.