Advanced calculations:


Please note: Terms in squared brackets represent the keys on your keyboard.


Percentage calculations:

Example	Input	Result
Calculating an add-on. 150 + 20 percent.	150 [+] 20 [P] [Enter] [Enter]	180
Calculating a discount. 180 - 20 percent.	180 [-] 20 [P] [Enter] [Enter]	144
What are 30 percent of 120?	120 [P] 30 [Enter] [Enter]	36
Calculating the percentage of change between two values. Example: A stock price rises from 120 to 156. What´s the percentage of change?	[D] 120 [Enter] 156 [Enter]	30%

Please note: You can also use the [%] key instead of the [P] key.


Sales Tax Function (TAX+ / TAX-):

Example	Tasteneingabe	Ergebnis
The net price is 200, the tax rate is 20%. What´s the gross price?	200 [+] [T] [Enter]	240
The gross price is 240, the tax rate is 20%. What´s the net price?	240 [-] [T] [Enter]	200

Please note: The tax rate has to be stored in the memory M1.


Square root:

Example	Input	Result
What´s the square root of 9?	9 [W]	3

Change the sign (+/-):

Example	Input	Result
Turn a positive number into its negative equivalent.	1 [V]	-1

Please note: Pressing [V] for a second time, changes the negative number back into a positive number.
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