| 
7
 | 
 | 
 | 
 | 
 | 
10
 | 
 | 
10
 | 
 | 
12
 | 
| 
Dual-Function Control Key (Gold Key) 
 |   |  
  |  
  | 
12
 | 
| 
Standard/Extended Function Keys 
 |   |  
  |  
  | 
12
 | 
 | 
12
 | 
 | 
12
 | 
 | 
12
 | 
 | 
 | 
13
 | 
| 
Entering Negative Numbers 
 |   |  
  |  
  | 
13
 | 
 | 
13
 | 
 | 
13
 | 
| 
Arithmetic and Basic Functions 
 |   |  
  |  
  | 
13
 | 
| 
Financial and Interactive Functions 
 |   |  
  |  
  | 
14
 | 
 | 
14
 | 
 | 
15
 | 
| 
Performing Simple Arithmetic 
 |   |  
  |  
  | 
15
 | 
 | 
16
 | 
| 
Reviewing/Verifying Data Entered 
 |   |  
  |  
  | 
16
 | 
 | 
17
 | 
| 
Recalling a Constant Value from Storage 
 |   |  
  |  
  | 
17
 | 
 | 
17
 | 
 | 
17
 | 
| 
Calculating Percentage Problems 
 |   |  
  |  
  | 
18
 | 
| 
Raising a Number to a Power (Exponentiation) 
 |   |  
  |  
  | 
19
 | 
| 
Calculating Time Intervals 
 |   |  
  |  
  | 
20
 | 
| 
Calculating Future or Past Dates 
 |   |  
  |  
  | 
20
 | 
| 
Determining Day of the Week 
 |   |  
  |  
  | 
21
 | 
 | 
 | 
22
 | 
 | 
23
 | 
| 
Summation and Averaging Calculations 
 |   |  
  |  
  | 
23
 | 
| 
Sum-of-the-Digits Calculations 
 |   |  
  |  
  | 
24
 | 
 | 
24
 | 
 | 
 | 
 | 
25
 | 
| 
Future Value of Compounded Amount 
 |   |  
  |  
  | 
25
 | 
| 
Present Value of Compounded Amount 
 |   |  
  |  
  | 
26
 | 
| 
Rate of Interest for Compounded Amount 
 |   |  
  |  
  | 
26
 |