HP 12c financial calculator Manuale Utente

File name: hp 12c_user's guide_English_HDPMBF12E44 

Page: 21 of 209   

Printered Date: 2005/7/29   

Dimension: 14.8 cm x 21 cm 

 

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Pressing - subtracts the number just 
entered from the number previously in 
the display. The calculator displays the 
result of this calculation, which is the 
balance after subtracting the second 
check. 

10.14- 

Keys in the next number and subtracts 
it from the previous balance. The new 
balance appears in the display. (It’s 
getting rather low!) 

1053+ 

1,064.54  Keys in the next number — the 

paycheck deposited — and adds it to 
the previous balance. The new, 
current balance appears in the 
display. 

The preceding example demonstrates how the hp 12c calculates just as you would 
using pencil and paper (except a lot faster!): 

 

Let’s see this happening in a different type of calculation — one that involves 
multiplying groups of two numbers and then adding the results. (This is the type of 
calculation that would be required to total up an invoice consisting of several items 
with different quantities and different prices.) 

For example, consider the calculation of (3 × 4) + (5 × 6). If you were doing this 
on paper, you would first do the multiplication in the first parentheses, then the 
multiplication in the second parentheses, and finally add the results of the two 
multiplications: