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Addition and Subtraction
Addition and subtraction entries are made with the same
rapid-entry style of most standard business machines. The
independent add register keeps addition and subtraction
entries separate from multiplication and division entries,
enabling you to solve complex problems without having to
write down intermediate results. Refer to "Using the
Independent Add Register" for more information.
Keys
The following keys are used for addition and subtraction operations.
Number Keys [0]-[9], [00]— Enter numbers containing up to
twelve digits. For numbers between one and negative one, a zero
automatically precedes the decimal, thus allowing a maximum of
eleven digits to the right of the decimal. The calculator disregards
any additional digits entered. Pressing 1001 has the same effect
as pressing [0] twice.
Decimal Point Key [ . ] — Enters a decimal point if a decimal is
not entered, the calculator automatically places a decimal point to
the right of the entered number. Refer to "Add Mode Calculations"
and "Fixed Decimal Calculations'' for decimal positioning when the
floating decimal is not desired.
Add Key [ + ]— Adds a number to the independent add register
The accumulated total is then displayed, and the number added s
printed with a + to its right. The number that is added to the
independent add register is the displayed number unless [ + ] is
pressed repeatedly See 'Repeated Addition and Subtraction"' for
an example.
Subtract Key [ - ]— Subtracts a number from the independent add
register. The accumulated total is then displayed, and the number
subtracted is printed with a to its right. The number that is
subtracted from the independent add register is the displayed
number unless [ ] is pressed repeatedly. See "Repeated Addition
and Subtraction" for an example.
Subtotal Key [S]— Prints the number of additions and
subtractions to the independent add register, then displays and
prints the subtotal In the register. A
is printed to the right of the
subtotal. Pressing [S] does not affect the contents of the register.
Total Key [T]— Prints the number of additions and subtractions to
the independent add register, displays and prints the total in the
register, then clears the register. An * is printed to the right of the
total.
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