Key Curriculum Press fx-7400G Plus Calculator Notes

Calculator Notes for the fx-7400G Plus
CHAPTER 0
To display the Main Menu screen of this calculator while in any mode,
press . If the Main Menu screen is not immediately displayed, press
MENU
or
QUIT MENU /ON MENU
AC
from the Main Menu screen. To access a mode, use the arrow key to
highlight the icon you want, and press
the mode you selected. You can also enter a mode without highlighting an
icon in the Main Menu by inputting the number marked in the lower-right
corner of the icon.
Many of the operations performed by this calculator can be executed by
pressing function keys
F1
options. The operation assigned to each function key changes according to
the mode. Function menus are at the bottom of the display in each mode.
This calculator has nine different modes or work areas depending on the
type of operation you wish to perform. When you first turn on your
calculator, you see the Main Menu, which is a screen containing icons for
the nine different modes. Pressing
You choose an icon from the Main Menu either by pressing its number
or by using the arrow keys to highlight its icon and pressing
calculations including calculations using fractions are performed in
mode.
RUN
Note 0A • Fractions
This calculator has two special keys to facilitate work with fractions. From
the Main Menu, select
RUN
the correct settings, press
sure that is set to
Simplify
below . Just arrow down and the screen will scroll. (See Note 1J for
Simplify
an explanation of the setup options.)
a. b is used to enter a number as a fraction or as a mixed number.
a ⁄
c
A mixed number contains two ° symbols. The first ° separates the
whole number and the fraction, and the second ° separates the
numerator and denominator. To enter
1
3 , press b
3 a ⁄ 1
c
2
reduced form. (If you don't want fractions to be automatically
reduced, see Note 1J.)
F ↔ D
b. converts fractions to decimal numbers and vice versa. A
nonrepeating decimal number that has a fraction equivalent with
less than nine digits in the numerator and denominator combined
will convert. (If the number is a repeating decimal number, you can
use the RPT DEC program in Note 0H to find the equivalent
fraction.) To change a decimal to a fraction, enter the decimal and
F ↔ D
. The ° symbol separates the numerator from the
press
EXE
©2003 Key Curriculum Press
. There are nine modes that can be accessed
to display the first screen of
EXE
˛
through . Pressing
F4
also displays the Main Menu.
MENU
and press . To ensure that the calculator has
EXE
to display the setup screen. Make
SHIFT [SET UP]
and that is set to
Auto Frac
3
, press
4
b . Fractions are automatically displayed in
a ⁄ 2 EXE
c
sometimes shows more
. Arithmetic
EXE
. The Frac setting is
a ˛ b/c
. To enter
b
3 a ⁄ 4 EXE
c
Discovering Algebra Calculator Notes for the Casio
(continued)
1
fx-7400G Plus