7. NORMAL CALCULATIONS
- Calculations can be performed in the same sequence
as the written formula (true algebraic logic).
- Nesting of up to 15 parentheses at 6 levels is allowed.
7-1) Four basic calculations (incl. parenthesis
calculations)
EXAMPLE
OPERATION
READ-OUT
6 =
4X5
23 + 4.5 - 53 =
-25.5
56 x (-12) ÷ (-2.5) =
268.8
2÷3 x (1 x 10
2 0
) =
6.666666667 19
7 x 8 - 4 x 5 (= 56 - 20)=
36.
1 + 2 - 3 x 4 ÷ 5 + 6 =
6.6
0.3
2x{7 + 6 x (5 + 4)}=
0. ( )
0. ( )
122.
* It is unnecessary to press the key before the key.
10 - {7 x (3 + 6)} =
- 53.
23 + 4 • 5 – 53 =
x 12 +/- ÷ 2
5
56
•
+/- =
2 ÷ 3 x 1
EXP
20 =
7 x 8 – 4
x
5 =
2 x
(
5 + 4 )
)
=
–
10
( 7 x
( 3 + 6 =
=
)
7 + 6 x
(
4 x 5 ÷ 6
INV
X
↔
Y
=
+
1
2 – 3 x
÷
4
5 + 6 =
b)Slide the calculator back casing slightly and lift it to
remove.
c)Use a ball-point pen to remove the old battery as
shown below. (Fig.2)
d)Install new battery so that the (+) side points upward.
e)Put back the back casing and tighten the four screws.
f )Check to see if the following is displayed. If not, or
nothing is displayed, repeat the above procedure all
over again.
Fig 1
Fig 2
- 15 -
- 16 -
silde to open
