4
Performing Basic Calculations
Addition and Subtraction 12.41 – 3.95 + 5.40 = 13.86
POWER = IC, ROUND = 5/4, DECIMAL = +
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2
0.
0
h
C
A
B
5
A
9
12.41
12
h
41 +
C
,
6
.
8.46
3
h
95 –
[
8.46
002
hhhhhhhhhhhhhh
8
h
46
g
6
5
J
9
13.86
5
h
40 +
\
13.86
003
hhhhhhhhhhhhhh
13
h
86
i
Multiplication and Division 11.32
Q
(–6)
P
2 = –33.96
POWER = PRT, ROUND = 5/4, DECIMAL = F
Enter/Press
Display
2
0.
0
h
C
A
A
L
C
B
?
11.32
11
h
32
Q
7
'
67.92
6
h
P
B
3
33.96
2
h
=
33
h
96
i
Squares 2.5
2
= 6.25
Enter/Press
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2
0.
0
h
C
B
L
6
?
3
6.25
2
h
5
Q
2
h
5 =
6
h
25
i
Reciprocals 1/25 = 0.04
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2
0.
0
h
C
B
6
'
3
3
0.04
25
h
P
25
h
=
1
h i
1
h
=
0
h
04
i
Calculating Percentages
POWER = PRT, ROUND = 5/4, DECIMAL = 2
Percent
49 x 15%
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2
0.
0
h
C
5
,
?
49.
49
h
x
A
6
>
7.35
15
h
%
7
h
35
i
Add-On
$1,450 + 15%
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2
0.
0
h
C
A
5
6
J
?
1,450.
1,450
h
x
A
6
>
217.50
15
h
%
217
h
50
i
9
1,667.5
1,667
h
50 +%
Discount
$69.95
-
10%
Enter/Press
Display
2
0.
0
h
C
7
,
L
,
6
?
69.95
69
h
95 x
A
J
>
7.00
10
h
%
7
h
00
i
.
62.95
62
h
95 –%
Percent Ratio 29.5 is what percent of 25?
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Display
2
0.
0
h
C
B
,
L
6
'
29.5
29
h
5
P
B
6
>
118.00
25
h
%
118
h
00
i
Using Constants
POWER = PRT, ROUND = 5/4, DECIMAL = F
Multiply by a Constant 5 x 3 = 15 5 x 4 = 20
The first number in a multiplication problem is the constant multiplier.
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2
0.
0
h
C
6
?
5.
5
h
x
C
3
15.
3
h
=
15
h i
5
3
20.
4
h
=
20
h i
Divide by a Constant 66 ÷ 3 = 22 90 ÷ 3 = 30
The second number in a division problem is the constant divisor.
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2
0.
0
h
C
7
7
'
66.
66
h
÷
C
3
22.
3
h
=
22
h
i
,
J
3
30.
90
h
=
30
h
i
Using Memory
POWER = PRT, ROUND = 5/4, DECIMAL = 2
You have $100. Can you purchase 3 items at $10.50, 7 items at
$7.25, and 5 items at $4.95?
Enter/Press
Display
0
0.00
0.00 M
i
A
J
L
6
J
?
C
N
M
31.50
10
h
5 x
3
h
=
31
h
50 M+
*
L
B
6
?
*
N
M
50.75
7
h
25 x
7
h
=
50
h
75 M+
5
L
,
6
?
6
N
M
24.75
4
h
95 x
5
h
=
24
h
75 M+
;
M
107.00
107
h
00 M
g
You cannot purchase all the items. Eliminate the last group of items.
5
L
,
6
?
6
F
M
24.75
4
h
95 x
5
h
=
24
h
75 M–
0
82.25
82
h
25 M
i
