PROBLEM INPUT
RESULT
(E in the display signifies
an error, the number in the
display is too large)
32 % of 2500 = ?
10 x 9 = 90
- (5 x 6) = -30
+(20 + 10) = 30
100 + 50 -10 =
200 x (30-50) =
(20 x 4 - 100) ÷ 4,5
+ 70 =
123456 x 789100 =
3 x 5 - 2
4 x 2,5 =
50 ÷ 7,8 =
2
3
= 8
85 expressed as a % of 300?
30% markup on 150
10% discount on 200
Power Calculation
Calculating using
memory
Markup
Markdown
Grand Total
4x3+(15-4)+20 2
+(14+26)=73
6.41025641
13
10
800
45
180
8
140
-4000
28.33333333
Entry correction
1234 x 2 = 2468
2468
65.55555556
E
9.741912960
3
90
M
30
M
30
M
90
12
GT
GT
GT
GT
GT
GT
GT
GT
GT
GT
GT
GT
GT
11
GT
10
GT
40
GT
73
GT
125
25
-12.5
2000
400
Square root of 9 =
0
5
0 0
1
0 0
2
0
3
0
5
1
0
3
5
0
0
0
2
5
3
2
7
8
1
2
3
4
5
6
5
2
0 0
1
.
5
4
0
2
4
7
8
9
1
0
0
2
9
AC
AC
GT
1
2
3
5
4
2
4
.
.
2
5
8
5
3
0
1
9
5
6
4
3
1
5
4
2
0
2
0
1
4
2
6
1
0
2
0
0
2
1
0
0
0
1
5
3
0
0
2
0
1
0
0
7
0
MU
1
0
0
2
7
5
MU
4
2
0 +/-
2
0
0
MU
MU
MU
