Note that you must include a *for multiplication; parentheses do not imply multiplication.

vThe Percent Key

The%key has two functions:

Finding a Percentage. In most cases, %divides a number by 100. The one exception is when a plus or minus sign precedes the number. (See “Adding or Subtracting a Percentage,” below.)

For instance, 25 %results in (&$..

To find 25% of 200, press: 200 *25 %=. (Result is .(&((.)

Adding or Subtracting a Percentage. You can do this all in one calculation:

For instance, to decrease 200 by 25%, just enter 200 -25 %=. (Result is #.(&((.)

Example: Calculating Simple Interest. You borrow $1,250 from a relative, and agree to repay the loan in a year with 7% simple interest. How much money will you owe?

Keys:Display:Description:

1250 +7 %

#K$.(&(()*-&.("

Interest on the loan is

 

 

$87.50.

=

#K%%-&.("

You must repay this

 

 

amount at the end of one

 

 

year.

The Mathematical Functions

Some of the math functions appear on the keyboard; others are in the MATH menu. Math functions act on the last number in the display.

40 2: Arithmetic

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

Print data : 2003/7/11