Chapter 2 Manual Calculations; Basic Calculations - Casio FX-7400GII - SOFTWARE VERSION 2-00 User Manual

Manual Calculations
Chapter 2

1. Basic Calculations

Arithmetic Calculations
• Enter arithmetic calculations as they are written, from left to right.
• Use the key to input the minus sign before a negative value.
• Calculations are performed internally with a 15-digit mantissa. The result is rounded to a 10-
digit mantissa before it is displayed.
• For mixed arithmetic calculations, multiplication and division are given priority over addition
and subtraction.
Example
56 × (–12) ÷ (–2.5) = 268.8
(2 + 3) × 10 2 = 500
2 + 3 × (4 + 5) = 29
6
= 0.3
4 × 5
1
* Final closed parentheses (immediately before operation of the
matter how many are required.
Number of Decimal Places, Number of Significant Digits, Normal
Display Range
• Even after you specify the number of decimal places or the number of significant digits,
internal calculations are still performed using a 15-digit mantissa, and displayed values are
stored with a 10-digit mantissa. Use Rnd of the Numeric Calculation Menu (NUM) (page
2-12) to round the displayed value off to the number of decimal place and significant digit
settings.
• Number of decimal place (Fix) and significant digit (Sci) settings normally remain in effect
until you change them or until you change the normal display range (Norm) setting.
Example 1 100
Condition
4 decimal places
5 significant digits
Cancels specification
1
* Displayed values are rounded off to the place you specify.
56 12
2 3
2 3
6 4
6 = 16.66666666...
2-1
Operation
2.5
1 2
4 5 * 1
5
key) may be omitted, no
[SET UP] -
[Display]
Operation
100 6
(SET UP)
(Fix)
(SET UP)
(Sci)
(SET UP)
(Norm)
- [Fix] / [Sci] / [Norm]
Display
16.66666667
1 1
* *
16.6667
1 1
* *
1.6667 +01
E
16.66666667
2