HP 35s Scientific Calculator - Manual (Page 313)

ALG: Summary C-5
If you were to key in  , the calculator would
calculate the result, -107.6471. However, that’s not what you want. To delay the
division until you’ve subtracted 12 from 85, use parentheses:
You can omit the multiplication sign ( ×) before a left parenthesis. Implied
multiplication is not available in Equation mode. For example, the expression 2 × (5
– 4) can be entered as 
4
, without the  key inserted between 2
and the left parenthesis.
Exponential and Logarithmic Functions
Keys: Display: Description:

4 
No calculation is done.
Õ  _
Calculates 85 − 12.
  _ Calculates 30/73.
 

Calculates 30/(85 − 12)
× 9.
To Calculate: Press: Display:
Natural logarithm (base e)
 

Common logarithm (base 10)

 

Natural exponential
 

Common exponential
(antilogarithm)
 
