HP 35s User Manual

 
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HP 35s  Percentages and Percentage Changes 
 
hp calculators - 3 - HP 35s  Percentages and Percentage Changes - Version 1.0 
Example 2: What is 12% added to $1,235.17? 
 
Solution: In RPN mode, the calculation shown in Figure 1 has left the original number in register Y, and 12% of it in 
register X. Pressing - adds the 12 percent to the original number, giving the answer. 
 
 Figure 3 
 
 In algebraic mode, press: 
 
 #$()#*-+&#$()#*/#$% 
 
 
 Figure 4 
 
 Note that in algebraic mode...

 
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HP 35s  Percentages and Percentage Changes 
 
hp calculators - 4 - HP 35s  Percentages and Percentage Changes - Version 1.0 
Answer: 8% subtracted from 5 times $1.85 gives a price of $8.51 for the 5 tins, to the nearest cent. 
 
Practice working problems involving percentage changes 
 
The examples so far have shown how percentages are calculated, and how they are added or subtracted, by use of the 
& key. Calculating a percent change is carried out using 3 above the 4 key. 
 
Example...

 
 
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HP 35s House Payment Calculations 
 
 
 
 
House payments 
 
The Time Value of Money on the HP 35s 
 
Practice solving house payment calculation problems 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   

 
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HP 35s House Payment Calculations 
 
hp calculators - 2 - HP 35s House Payment Calculations - Version 1.0 
House payments 
 
The payment required to pay off a house over time involves the solution of an ordinary annuity with the value of the 
payment as the unknown variable. 
 
The Time Value of Money on the HP 35s 
 
To solve time value of money problems on the HP 35s, the formula below is entered into the flexible equation solver built 
into the calculator. This equation expresses...

 
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HP 35s House Payment Calculations 
 
hp calculators - 3 - HP 35s House Payment Calculations - Version 1.0 
5) After you press : for the last time, the value of the unknown variable will be calculated and displayed. 
6) To do another calculation with the same or changed values, go back to step 2 above. 
 
The SOLVE feature will work effectively without any initial guesses being supplied for the unknown variable with the 
exception noted above about the variable I in this equation. This...

 
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HP 35s House Payment Calculations 
 
hp calculators - 4 - HP 35s House Payment Calculations - Version 1.0 
-In either RPN or algebraic mode, press: &: 
 
 Figure 4 
 
-In either RPN or algebraic mode, press: 2%2%&&&.:-(Enters B) 
 
 In algebraic mode, press: >*%$%&&&.:-(Enters B)  
 Figure 6 
 
Answer: $1,304.81 (Note that the loan amount was entered as a negative number)  
 
Example 3: Jeff bought a house for $125,000 and financed it with a 20-year loan at a rate of 5.25%, compounded...

 
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HP 35s House Payment Calculations 
 
hp calculators - 5 - HP 35s House Payment Calculations - Version 1.0 
 
Solution: First, enter the time value of money equation into the HP 35s solver as described earlier in this document.  
 
 Then press !-and press 8or 9 to scroll through the equation list until the time value  
 of money equation is displayed. Then press:-
 
-56# 
 
 The HP 35s SOLVER displays the first variable encountered in the equation as it begins its solution.  
 These...

 
 
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HP 35s Property Appreciation 
 
 
 
 
Property Appreciation 
 
The Time Value of Money on the HP 35s 
 
Practice solving property appreciation problems 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   

 
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HP 35s Property Appreciation 
 
hp calculators - 2 - HP 35s Property Appreciation - Version 1.0 
Property Appreciation 
 
When the value of a piece of property increases over time, it has appreciated in value. If a value in the past is known, it 
is possible to solve the resulting compound interest problem to determine the rate of this appreciation. 
 
The Time Value of Money on the HP 35s 
 
To solve time value of money problems on the HP 35s, the formula below is entered into the...