Copyright L
EXIBOOK
2002
- 19 -
GB
2. MANUAL CALCULATIONS
2.1 BASIC CALCULATIONS
2.1.1 Arithmetic operations
●
Arithmetic operations are performed by pressing the keys in the same sequence as in the
formula.
●
For negative values, press
before entering the value.
Example
23 + 4.5-53 =
56 x (-12)
÷
(-2.5) =
12369 x 7532 x 74103 =
(4.5 x 10
75
) x (-2.3 x 10
-79
) =
(2+3) x 10
2
=
(1 x 105)
÷
7=
(1x10
5
)
÷
7-14285 =
Key Operation
23
4.5 53
56
12
2.5
12369
7532
74103
4.5
75
2.3 79
2 3
1 2
1 5 7
1 5 7
14285
Display
-25.5
268.8
12
6.903680613
-03
-1.035
500.
14285.71429
0.7142857
Remarques
Results greater than 10
10
(10billion) or
less than 10
-2
(0.01) are displayed in
exponential form.
NORM1
The correct result cannot be derived by
entering
2 3 2.
Be sure to enter
1 between the
and
in this example.
Internal calculations are calculated with
12 digits for a mantissa, and the result is
displayed rounded off to 10 digits.
Internally, however, the mantissa of the
result is 12 digits.
EXE
EXE
EXE
EXE
EXP
-
+
x
(-)
SHIFT
(-)
SHIFT
EXP
EXE
EXP
EXP
÷
EXE
EXE
EXP
EXP
EXP
÷
÷
-
(-)
SHIFT
(
)
÷
(-)
SHIFT
Example
3 + 5 x 6 =
7 x 8 - 4 x 5 =
1 + 2 - 3 x 4
÷
5 + 6 =
Key Operation
3 5 6
7 8 4 5
1 2 3 4
5 6
Display
33.
36.
6.6
Remark
EXE
EXE
EXE
x
+
x
x
-
+
+
x
-
x
x
x
x
+
+
x
(
)
)
(-)
SHIFT
●
For mixed arithmetic operations, multiplication and division are given priority over addition and
subtraction.
Example
100 - (2+3) x 4 =
2 + 3 x (4+5) =
(7-2) x (8+5) =
Key Operation
100
2 3
4
2 3 4 5
7 2
8 5
Display
80.
29.
65.
Remark
Closed parentheses occurring
immediately before operation of the
key may be omitted, no matter
how many are required.
A multiplication sign (x) occurring
immediately before an open parenthesis
can be omitted.
EXE
EXE
x
+
+
x
x
-
+
+
-
2.1.2 Parenthesis calculations
EXE
(
(
)
(
(
)
)
EXE
)