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Chapter 4: Spreadsheets in Calc
Calculating With formulae
All formulae begin with an equals sign. formulae may contain numbers or text, and other
data is also possible such as format details, that specify how the numbers are to be formatted.
Naturally the formulae will also contain arithmetic operators, logic operators or function
starts.
When using the basic arithmetic signs (
+, -, *, /
) in formulae, remember that using the Multiplication and
Division before Addition and Subtraction rule. Instead of writing
=SUM(A1:B1)
it's better to write
=A1+B1
.
Parentheses are also useful for grouping. For example, the result of the formula
=1+2*3
means something different
than
=(1+2)*3
.
Here are some typical Calc formulae:
=A1+ 10
Displays the contents of cell A1 plus 10 .
=A1* 16%
Displays 16% of the contents of A1.
=A1 * A2
Displays the result of the multiplication of A1 and A2.
=ROUND(A1;1)
Rounds the contents in cell A1 to one decimal place.
=EFFECTIVE(5%;12)
Calculates the effective interest at 5% annually with 12
payments.
=B8-SUM(B 10:B 14)
Calculates the sum of the cells B 10 to B 14 minus the value of
B8.
=SUM(B8;SUM(B 10:B 14))
Calculates the sum of cells B 10 to B 14 and adds the value to
B8.
It is also possible to nest functions in formulae, as shown in the example. Functions may also
be nested within functions. For example, instead of simply =ROUND(A1;1), calculate and
round a sine function using =ROUND(SIN(A1);2). Use the Function Wizard to help form
nested functions.
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