1 basic calculations, Karithmetic calculations – Casio CFX-9970G Manual Calculations User Manual
Page 2
36
2-1 Basic Calculations
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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
Display
23 + 4.5 – 53 = –25.5
23
+
4.5
-
53
w
–25.5
56
×
(–12)
÷
(–2.5) = 268.8
56
*-
12
/-
2.5
w
268.8
(2 + 3)
×
10
2
= 500
(
2
+
3
)*
1
E
2
w
*
1
500
1 + 2 – 3
×
4
÷
5 + 6 = 6.6
1
+
2
-
3
*
4
/
5
+
6
w
6.6
100 – (2 + 3)
×
4 = 80
100
-(
2
+
3
)*
4
w
80
2 + 3
×
(4 + 5) = 29
2
+
3
*(
4
+
5
w
*
2
29
(7 – 2)
×
(8 + 5) = 65
(
7
-
2
)(
8
+
5
)w
*
3
65
6
= 0.3
6
/(
4
*
5
)w
*
4
0.3
4
×
5
*
1
“
(
2
+
3
)E
2” does not produce the correct result. Be sure to enter this calculation as
shown.
*
2
Final closed parentheses (immediately before operation of the
w
key) may be omitted, no
matter how many are required.
*
3
A multiplication sign immediately before an open parenthesis may be omitted.
*
4
This is identical to 6
/
4
/
5
w
.
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Number of Decimal Places, Number of Significant Digits,
Exponential Notation Range
• These settings can be made while setting up the display format (Display) with
the set up screen.
• Even after you specify the number of decimal places or the number of signifi-
cant digits, internal calculations are still performed using a 15-digit mantissa,
and displayed values are stored with a 10-digit mantissa. Use Rnd (
4
) of the
Numeric Calculation Menu (NUM) to round the displayed value off to the
number of decimal place and number of significant digit settings.
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