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
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 % | Interest on the loan is | |
|
| $87.50. |
= | | 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 :