Deferring Evaluation
You don't have to complete and evaluate an expression as soon as you enter it. You can enter part of an expression, leave the page to check work on another page, and then come back to the page to the complete the expression at a later time.
Forcing a Decimal Approximation
To force a decimal approximation in a result, complete one of the following actions:
| ▶ | Touch and hold ENTER, and then slide to select  to evaluate the expression. |
| ▶ | Include a decimal in the expression. |
| ▶ | Wrap the expression in the approx() function. |
Accessing Calculator History Items
You cannot edit an expression if the result has been calculated. However, you can copy the expression from the history and paste it into the entry line.
Copying History Items
and go to 
, and then tap