Using Your Calculator with Signed Numbers

Using Your Calculator with Signed Numbers

1. If your scientific calculator has the 
   
   you can use it to find the opposite of a number.
2. On most scientific calculators, this key is pressed AFTER the number is entered.
3. On most graphing calculators, this key is pressed BEFORE the number is entered.

Examples for scientific calculators:

Example 1.

Example 2.

Example 3.