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FX 65 Training guide
Basic Arithmetic Calculations
Basic Functions and Operations
The following are the basic functions and operations of the calculator.
Backspaces and deletes the right digit of a displayed input value.
[AC] Turns power on.
[C] Clears the displayed input value.
[SHIFT] Shifts the keyboard and accesses functions marked above the keys.
Note: There is no power off key. The calculator automatically turns off about six minutes
after you finish using it.
Basic Calculations
Be sure to press [AC] when beginning a new calculation.
[+] [ - ] [x] [÷] Addition, subtraction, multiplication, and division
÷R Division with remainder. The display shows up to (6) digits for the
quotient and (4) digits for the remainder.
[=] Performs calculation
[+/-] Changes the sign of a displayed value. You must enter the value
first.
[(] [)] Left and right parentheses. You can have up to 18 sets of nested
parentheses. Note: The calculator uses “order of operations”. So
for 2 + 3 x 4, you do not need parentheses around 3 x 4. The
calculator will calculate 3 x 4, then add 2.
[SHIFT] [π] In degree mode, this will input the numerical value for π. In radian
mode, the “π” symbol will be displayed.
[SHIFT] [X-Y] Swaps the value of x and y in power and root calculations. Also
swaps the minuend and subtrahend in subtraction calculations.
Example: for 3
2
, to swap 3 and 2, press [3] [x
y
] [2] [SHIFT] [X-Y] [=].
The answer displayed is 8.
4
References the Casio FX-65 User’s Guide Casio FX-65 Fraction calculator