User's Manual

BrailleNote Apex BT User Guide
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8.3.4 Percent.
Percent is a special operator that automatically evaluates the calculation without the need to press
ENTER as well. To enter the percent operator, press:
Nemeth: dots 1-4-6.
UK Braille: P, (dots 1-2-3-4).
UEB: P, (dots 1-2-3-4).
The following examples show how the percent operator can be used.
To calculate a 20% mark-up on 56, type:
5 6 + 2 0 % which gives the result 67.2.
To calculate a 10% mark-down on 45, type:
4 5 - 1 0 % which gives the result 40.5.
To calculate what percentage 17 is of 20, type:
17 / 20 % which gives the result 85.
That is, 17 is 85% of 20.
To calculate 30% of 180, type:
180 * 30% which gives the result 54.
To get the percentage from the fraction 1/2, type:
1 BACKSPACE with dots 3-4 / 2% which gives the result 50.
8.3.5 Fractions.
This section covers working with fractions and mixed numbers in KeyPlus. It also describes how to
convert fractions to decimals, decimals to fractions, how to reduce fractions to the simplest fraction,
and convert mixed numbers to fractions and vice versa. You can use fractions in any KeyPlus
calculation.
Note that the calculator memory can hold fractions and mixed numbers as well as decimals.
8.3.5.1 Entering Fractions.
This section explains how to enter fractions.
For Nemeth and UEB and UK Braille, to enter a fraction:
1. Enter the numerator (the top number in the fraction).
2. Press BACKSPACE with dots 3-4 to add the horizontal line between the numerator and
denominator. KeyPlus announces "over"
3. Enter the denominator (the bottom number in the fraction). UK Braille users should note that
the denominator is entered using upper digit keys, not lower digits.