Note:
If you want to perform a function using the number in the display, simply tap the function and then = instead of tapping the number again. For exam- ple, tap 4 + = to get 8.
Note:
You cannot repeat the calculation of a percentage by pressing = again.
M+ Adds the current value to the value stored in memory (but does not display the sum)
M- Subtracts the current value from the value stored in memory (but does not display the dif- ference)
Using the Menu
To access the menu, tap 
in the Control Pad. The program uses a menu that contains the following items.
Help Displays online help.
About Displays legal information about Calculate.
Exit Closes the program.
Making Calculations
To make a simple calculation, follow these steps.
1.Tap a number. For example, tap 4.
To enter a negative value, tap the number and then tap
2.Tap the key for the mathematical function you want. For example, tap +.
A symbol for the function appears on the display.
3.Tap another number. For example, tap 9.
4.Tap =.
The sum, 13, appears on the screen. To clear the program, press C/CE.
To subtract a percentage from a value, follow these steps.
1.Tap the total value. For example, tap 300.
2.Tap the key for the mathematical function you want. For example, tap
3.Tap the percent value. For example, tap 5.
4.Tap %.
The value that equals a 5% discount from 300, 285, appears on the screen.