Expressions are calculations that need be evaluated. To create and modify expressions, see the following instructions.

1. Type the expressions that you want to calculate.
2. After each expression, type = and one of the following:
   • A value
   • The intermediate results symbol (#)
   • The final results symbol (?)
3. Calculate the expressions.

1. Type over the parts that you want to change in your calculations.
2. Recalculate the changed calculations and any other calculations that are affected by the changes.