Tap the Home Button
> Apps 
> Calculator 
.Tap the number keys to enter numbers.
For simple calculations, tap the function you want to perform (
, 
, 
or 
) followed
by 
.
NOTE
For more complex calculations, you can switch to the Scientific calculator. Tap the Menu icon
then tap Scientific
Calculator (only necessary in portrait mode).To view the calculation history, tap the Menu icon
then tap Calculation history.