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Default angle unit setting and conversions, Powers and roots, Internal rounding – Casio FX 65 User Manual

Page 6

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FX 65 Training guide

% change, when a value is increased
From 30 to 36

[36] [ - ] [30] [SHIFT] [%]

20


Percent of increase, when an amount is added.
300 cc is added to 500 cc

[300] [+] [500] [SHIFT] [%]

160



Default angle unit setting and conversions

[DRG]

Changes the default angle unit cyclically between degrees, radians,
and grads.


[SHIFT] [DRG]

Changes the default angle unit cyclically between degrees, radians,
and grads, and converts the displayed value accordingly.


Powers and roots

[x

2

]

Squares a number. Example: [5] [x

2

]


[SHIFT] [x

3

]

Cubes a number. Example: [3] [SHIFT] [x

3

]

[

x

y

]

Raises a number to a power (other than 2 or 3).

Example:

[2]

[x

y

] [4] [=]


[SHIFT] [1/x]

Calculates the reciprocal of the displayed value.

Example: [3] [SHIFT] [1/x]

[SHIFT] [

]

Calculates the square root of a number.

Example: [9] [SHIFT] [

]

[SHIFT] [

3

]

Calculates the cube root of a number.

Example: [27] [SHIFT] [

3

]


[SHIFT] [x

1/y

]

Calculates the specified root of a number.

Example: For 27

1/3

, press [27] [SHIFT] [x

1/y

] [3] [=]


Internal Rounding

Calculates internal rounding based on the number of decimal places you have on the
display. For example, set the calculator to 3 fixed decimal places.

Press [200] [

÷] [7] [=]

Press [SHIFT] [RND]. This will truncate the number at 3 decimal places.
Press [x] [14] [=]
(The answer displayed is 399.994).

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References the Casio FX-65 User’s Guide

Casio FX-65 Fraction calculator