Doing Arithmetic

The “v ” in the margin is a reminder that the example keystrokes are for ALG mode.

This is a brief introduction to doing arithmetic. More information on arithmetic is in chapter 2. Remember that you can erase errors by pressing <or C.

To calculate 21.1 ＋ 23.8:

Keys:Display:Description:

21.1+ $#&#()"

23.8$#&#()$%&*"

=

++&,("

=completes calculation.

Once a calculation has been completed, pressing another digit key starts a new calculation. On the other hand, pressing an operator key continues the calculation:

77.35 -

--&%./"

Calculates 77.35

– 90.89

90.89 =

/#%&.+"

 

 

65 @v*12

"

New calculation:

 

=

,'&-."

65 x 12.

 

/3.5 =

$-&'+"

Calculates 96.75

⎟ 3.5.

You can also do long calculations without pressing = after each intermediate calculation—just press it at the end. The operators perform from left to right, in the order you enter them. Compare:

 

 

65 + 12

 

and

65 +

12

 

 

3.5

 

 

 

 

 

3.5

 

65 +12 /

"

 

 

Operations occur in the

3.5 =

$$&(("

 

 

order you see them.

 

 

 

 

 

1: Getting Started 21

File name : 17BII-Plus-Manual-E-PRINT-030709

 

Print data : 2003/7/11