Delta FX 65 - page 4

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 32, to swap 3 and 2, press [3] [xy] [2] [SHIFT] [X-Y] [=].

The answer displayed is 8.

References the Casio FX-65 User’s Guide Casio FX-65 Fraction calculator