- 19 -
- 20 -
3 456 78.
8 11 13
• By pressing INV D/C continuously, the displayed
value will be converted to the improper fraction.
Continuing from above INV D/C
115 13.
4 15.
-32 105.
• The answer in a calculation performed between a
fraction and a decimal is displayed as a decimal.
41 52.
62.20961538
7-5) Percentage calculations
12% of 1500
180.
Percentage of 660 against 880
75.
15%add-on of 2500
375.
2875.
25% discount of 3500
875.
2625.
If you made $80 last week and $100 this week, what is
the percent of the new income to the old income?
125.
(%)
3 456 = 8 11 (Reduction)
78 13
12 – 32 =
45 56
41 x 78.9 =
52
456
3
78
A
B
/
C
A
B
/
C
=
12
45 –
A
B
/
C
32
56 =
A
B
/
C
41
52 x
A
B
/
C
78 • 9 =
12
x
% =
INV
1500
15
+
%
INV
2500
25
–
%
INV
3500
880
660 ÷
% =
INV
80
100 ÷
% =
INV
=
=
7- 4) Fraction calculations
■
Total of integer, numerator and denominator must be
within 10 digits (includes division marks).
■
A fraction can be transferred to the memory.
■
When a fraction is extracted, the answer is displayed
as a decimal.
■
A press of AB/C key after the = key converts the
fraction answer to the decimal scale.
4 5 x ( 3 1 + 1 2 ) ÷ 7 8 =
6 4 3 9
3 7 568.
3.012323944
3 7 568.
3 11 20
3.55
2 1 20.
149250000.
• During a fraction calculation, a figure is reduced to the
lowest terms by pressing a function command key ( ,
, , or ) or the key if the figure is reducible.
2 4 + 3 – 1 1
5 4 2
(1.5x10
7
) - {(2.5x10
6
)x 3 }=
100
2
+
4
1
3 )
÷ 7
8
4
A
B
/
C
A
B
/
C
A
B
/
C
A
B
/
C
+
2
4
5
3
4 –
A
B
/
C
A
B
/
C
A
B
/
C
1
1
2 =
A
B
/
C
A
B
/
C
3
x
•
2
5
100
=
A
B
/
C
EXP
•
1
5
6
EXP
7 –
÷
x
–
=
+
5
6 x
( 3
1
A
B
/
C
A
B
/
C
A
B
/
C
A
B
/
C
9 =
A
B
/
C
A
B
/
C
A
B
/
C