124
Calculation examples Calculation Example Operation Display (answer)
Arithmetic 12 x 3 + 5 = 12
X
3
+
5
=
41.
(–24) ÷ 4 – 2 = 24
+
/–
4
–
2
=
–8.
Constant 34 + 57 = 34
+
57
=
The addend becomes a constant. 91.
45 + 57 = 45
=
102.
(Subtraction and division are performed in
the same manner.)
68 x 25 = 68
X
25
=
The multiplicand becomes a constant. 1,700.
68 x 40 =
40
=
2,720.
Percentage What is 10% of 200? 200
X
10
%
20.
What percentage is 9 36
%
25.
9 of 36?
Add-on What results from a 200
+
10
%
220.
10% increase of 200? (or 200
X
10
%
+
=
)
Discount What is 500 after a 500
–
20
%
400.
20% discount? (or 500
X
20
%
–
=
)
Square root √25 – 9 = 25
–
9
=
ª
4.
Power (43)2 =4
X
=
=
X
=
4,096.
Reciprocal 1/8 = 8
=
0.125