Casio Fx-260 Einrichtungshandbuch

FX 260

Solar Scientiﬁc

Calculator

Training Guide

Basic scientiﬁc calculator

Solar powered

Ability to ﬁx decimal places

Backspace key to ﬁx

entry mistakes

Single variable statistics

The ONLY

calculator that is

GED approved

CASIO FX 260

SOLAR SCIENTIFIC CALCULATOR 1

CONTENT

MODES

Basic Arithmetic Calculations

Basic Fuctions and Operations

Basic Calculations

Fraction Calculations and Simpliﬁcation

Percent Calculations

Powers and Roots

Internal Rounding

PROBABILITY

Random Number Generation

Permutations and Combinations

Factorials

MEMORY

Memory Calculations

TRIGONOMETRY

Trigonometric/Inverse Trigonometric Functions

Hyperbolic/Inverse Hyperbolic Functions

Coordinate Conversion

Sexagesimal Functions (Degrees/Minutes/Seconds)

Logarithmic Functions

STATISTICS

Entering and Analyzing Statistical Data

CASIO FX 260

SOLAR SCIENTIFIC CALCULATOR 2

MODE

Before starting a calculation, you must ﬁrst enter the correct mode.

To perform this type

of calculation:

Perform this key

operation: Name of mode:

Basic arithmetic

calculations

MODE

0COMP

Standard deviation

calculations

MODE

.SD

Calculations using

degrees

MODE

4DEG

Calculations using

radians

MODE

5RAD

Calculations using

gradients

MODE

6GRA

Specify number of

places.

MODE

(x= # of decimal places

and ranges from 0–9)

FIX

Specify number of

signiﬁcant digits to

display.

MODE

(x= # of signiﬁcant

places and ranges from

0–9)

SCI

Cancels FIX and SCI

settings

MODE

9NORM

nDisplay indicators show the current mode setting. If there is no display shown,

this indicates COMP mode.

nThe COMP and SD modes can be used in combination with the angle

unit settings.

CASIO FX 260

SOLAR SCIENTIFIC CALCULATOR 3

BASIC ARITHMETIC CALCULATIONS

Basic Functions and Operations

The following are basic functions and operations of the calculator.

$ Backspaces and deletes the right digit of a displayed input value.

Turns power on.

Clears the displayed input value.

L Shifts the keyboard and accesses functions marked above the keys in yellow.

NOTE: There is no power o key.

Basic Calculations

Be sure to press Cwhen beginning a new calculation.

+-mM Addition, subtraction, multiplication, and division

p Performs calculation

+/–

Changes the sign of a displayed value; you must enter the value ﬁrst.

() Left and right parentheses.

Note: The calculator uses

“order of operations”. For example for 2 + 3 × 4, you do not need

parentheses around 3 × 4. The calculator will calculate 3 × 4, then

add 2.

This will input the numerical value for π.

X–Y

[(---

Swaps the value of xand yin power and root calculations.

Also, swaps the minuend and subtrahend in subtraction calculations.

Example: for 32, to swap 3 and 2, press 32L

X–Y

[(---

The answer displayed is 8.

CASIO FX 260

SOLAR SCIENTIFIC CALCULATOR 4

Constant Calculations

You can perform calculations with constant values by setting an automatic

constant to continually add, subract, multiply, or divide. Pressing +,-,m, or M

twice after inputting a number, will make that number a constant. “K” will be shown

on the display, indicating that a constant is being used.

For example, enter [constant] ++. When you press p, the constant will be

added to the number on the display. Pressing C clears the constant.

Display

For example: Each time you press p, it will add 2 to the displayed number

3++4p 7

5p 8

10p 13

Fraction Calculations and Simpliﬁcation

nUse the COMP mode for fraction calculations.

nYou can perform addition, subratction, multiplication, and division.

nThe result of a calculation that fractions and decimal values are displayed as

a decimal value.

nYou can enter a fraction using the zkey.

nThe total number of digits, including division marks, cannot exceed 10.

Be sure to press C when beginning a new calculation.

z Inputs the integer part of a fraction (mixed number) and the

numerator (b)/denominator (c) of a fraction in the form b/c.

Example: to input ½, press 1z2.

Example: to input 2½, press 2z1z2.

L[d/c] Converts the displayed value between a mixed number and improper

fraction.

z Converts the displayed value between fraction and decimal form.

NOTE: After entering a fraction using z, pressingpwill display it in

simplest form.

CASIO FX 260

SOLAR SCIENTIFIC CALCULATOR 5

Percent Calculations

nUse the COMP mode for percentage calculations.

Example Display

To ﬁnd percentage of a

number. What is 12% of 15? 15m12L

1.8

To calculate percentage of one

number to another. What per-

centage of 80 is 40? 40M80L

To add a percentage: 15% of

1000 (or 1000 increased by 15%) 1000m15L

+1150

To discount a percentage:

85 by 10%. 85m10L

76.5

Percent change: when a value is

increased from 30% to 36% 36-30L

Percent of increase: when

an amount is added. 300cc is

added to 500cc 300+500L

160

Powers and Roots

dSquares a number. Example: 5d

q„ Cubes a number. Example: 3q„

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

Example:

1/x

---)]

Calculates the reciprocal of the displayed value.

Example: 3q

1/x

---)]

qd Calculates the square root of a number.

Example: 9q

–

Calculates the cube root of a number.

Example: 27q

–

1/y

Calculates the specified root of a number.

Example: 27⅓, press 27q

1/y

CASIO FX 260

SOLAR SCIENTIFIC CALCULATOR 6

Internal Rounding

Calculates internal rounding based on the number of decimal places on the display.

For example, set the calculator to 3 fixed decimal places.

Press

200M7p

Press q

RND

This will truncate the number at 3 decimal places.

Press m14p

(The answer displayed is 399.994)

PROBABILITY

Random Number Generation

RAN#

Generates a random number between 0 and 0.999

Permutations and Combinations

A permutation is a selection of objects in which the order matters.

Example: To determine the number of possible different

arrangements using 4 items selected from 10 items.

10q

nPr

4p 5040

nCr

A combination is a selection of objects from a collection and

order is irrelevant.

Example: To determine the number of different combinations of

4 items selected from 10 items. 10q

nCr

4p 210

Factorials

Calculates the factorial of a number. Example: 5q

CASIO FX 260

SOLAR SCIENTIFIC CALCULATOR 7

MEMORY

Memory calculations

The memory is convenient for calculating cumulative totals.

m Adds displayed value to memory.

Recalls the value stored in memory.

M–

Subtracts the displayed value from memory.

Min

Replaces the current memory contents with the displayed value.

To clear memory, press 0q

Min

or Cq

Min

CASIO FX 260

SOLAR SCIENTIFIC CALCULATOR 8

TRIGONOMETRY

Be sure to select the angle unit (D,R,G) you want to use before beginning

a calculation.

Mode 4 = Degrees (Deg)

Mode 5 = Radians (Rad)

Mode 6 = Grad s (Gra)

Trigonometric/Inverse Trigonometric Functions

To calculate the sine, cosine, or tangent of the displayed angle.

Example: (in degree mode): 30j (= .5)

To calculate the arcsine, arccosine, or arctangent

Example: (in degree mode):.5qj (= 30)

Hyperbolic/Inverse Hyperbolic Functions

To calculate the hyperbolic sine, cosine, or tangent of the displayed angle.

Example: (in degree mode): 3.6cq (= 18.28545536)

To calculate the hyperbolic arcsine, arccosine, or arctangent of the displayed angle.

Example: (in degree mode): 30cq

Sin-1

30qc

Sin-1

(= 4.094622224)

Coordinate Conversion

You can convert between rectangular and polar coordinates.

Make sure you are using the correct angle unit (D,R,G) before staring your calculation.

R–P

Rectangular to polar coordinate conversion

P–R

Polar to rectangular coordinate conversion

qUse this operation to switch between the two coordinates produced by

the conversion operation.

Example: To convert polar coordinates (r = 2, θ= 60) to rectangular

coordinates (x, y).

P–R

60p This gives you the xvalue.

qThis gives you the yvalue.

Degrees/Minutes/Seconds

You can perform calculations using degrees, minutes, and seconds, and convert between

sexagesimal and decimal values.

Example:

Keystrokes Display

2.5p 2.5

Press x 2° 30° 0

10x15x12xO4p 41° 0° 48°

CASIO FX 260

SOLAR SCIENTIFIC CALCULATOR 9

Logarithmic Functions

You can ﬁnd logarithms, natural logarithms, and antilogarithms.

g Calculates the common logarithm of the displayed value.

100g

h Calculates the natural logarithm (base e) of the displayed value.

90h

Calculates the common antilogarithm of the displayed value,

which is 10 raised to the power of the value.

Calculates the natural antilogarithm of the displayed value,

which is eraised to the power of the value.

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