HP 17bII User's Manual | Page 39

HP Calculators User's Manual - 17bII.
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 2: 

Arithmetic 

39 

File name : English-M02-1-040308(Print).doc   Print data : 2004/3/9

In the second case, the / key acts like the = key by displaying the 
result of 750 x 12. 
 
Here’s a longer chain calculation. 

456 - 75

68

   

18.5

1.9

×

 

This calculation can be written as: 456 

− 75 ÷ 18.5 x 68 ÷ 1.9. 

Watch what happens in the display as you key it in: 
 
Keys: Display: 

 

456 - 75 /  

 

18.5 * 



 

68 / 



 

1.9 = 



 

 

Using Parentheses in Calculations  

Use parentheses when you want to postpone calculating an 
intermediate result until you’ve entered more numbers. For example, 
suppose you want to calculate: 

30

 x   9

85 -12

 

If you were to key in 30 / 85 -, the calculator would calculate the 
intermediate result, 0.35. However, that’s not what you want. To de- 
lay the division until you’ve subtracted 12 from 85, use parentheses: 
 
Keys: Display: Description: 

30 /( 85- 



No calculation is done. 

12 ) 



Calculates 85 

− 12. 

* 9  



Calculates 30 / 73. 



Calculates 0.41x 9. 

 

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