User Manual
2-1
Chapter 2 Manual Calculations
1. Basic Calculations
k 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 Operation
56 × (–12) ÷ (–2.5) = 268.8
56 *-12 /-2.5 w
(2 + 3) × 10
2
= 500
(2 +3 )*1
52 w
2 + 3 × (4 + 5) = 29
2
+3 *(4 +5 w*
1
4
×
5
6
= 0.3
6 /(4 *5 )w
*
1
Final closed parentheses (immediately before operation of the w key) may be omitted, no
matter how many are required.
k Number of Decimal Places, Number of Significant Digits, Normal
Display Range
[SET UP]
-
[Display]
-
[Fix]
/
[Sci]
/
[Norm]
• 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
2-13) 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 ÷ 6 = 16.66666666...
Condition Operation Display
100 /6 w
16.66666667
4 decimal places
!m(SET UP) ff
1(Fix) ewJw
16.6667
5 significant digits
!m(SET UP) ff
2(Sci) fwJw
1.6667
E
+01
Cancels specification
!m(SET UP) ff
3(Norm) Jw
16.66666667
*
1
Displayed values are rounded off to the place you specify.
*
1
*
1
2