Manual HP 12c - F2230A (page 21 of 211) (English)

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Section 1: Getting Started 21

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

Keystrokes Display

21.68

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-

11.54

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:

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HP 12c - F2230A Manual

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