Contents
Number of Periods for Compounded Amount   
27
Compounded Amount of Interest Earned   
27
Nominal Rate Converted to Effective Annual Rate   
28
Effective Annual Rate Converted to Nominal Rate   
28
Annuities   
29
Bonds   
32
Bond Price   
32
Bond Yield   
34
Depreciation   
35
Sum-of-the Years’ Digits Depreciation   
35
Declining Balance Depreciation   
36
Discounted Cash Flow Analysis   
37
Loans
Annual Percentage Rate Interest on Installment Loans   
39
Add-on Interest to Annual Percentage Rate Conversion   
39
Accrued Interest   
40
Discounted Note   
41
Accumulated Interest Between Two Points, Remaining Principal   
42
Rebates on Consumer Loans (Rule of 78’s)   
43
Merchandising, Purchasing
Cost and Price (Markup, Chain Discounts)   
44
Cash Discounts   
45
Statistical Analysis
Mean, Standard Deviation   
46
Linear Regression (Trend Line) Analysis   
48
Denominate Number Conversion
US-to-Foreign Currency Conversion   
51
Foreign-to-US Currency Conversion   
51
Appendixes:
A. Design Concepts   
52
B. Combined Arithmetic Processes   
55
C. Extended Bond Calculations   
60
D. Operating Characteristics   
67
E. Accessories   
72
F. Service and Warranty   
73
G. HP-80 Calculation Formulas   
75
Glossary   
79
5