This calculator allows you to perform the simplest arithmetic operations necessary for your work.

In almost all mathematical operations, values ​​with different units can be used.
The dimension of values ​​should attract their attention a little more.

All summands must have the same dimension otherwise, an error message will be output.

Allowed expressions:
$ 2 + 6.4 = 8.4 $
$ 9 in 2/3 + 3.4cm = 11.005in $

Not allowed:
$ 2mm + 6.4 = ? $
$ 9in^2 + 3.4cm = ? $

Minuend and all Summands must have the same dimension, otherwise, an error message will be issued.
The same rules apply here as in addition.

e.g.:
$ 9.5 in - 3.4cm = 8.161 in $
$ 9.5 in^2 - 3.4cm^2 = 8.973 in^2 $
$ 9 - 3 - 5 = 1 $

The dimension of the Product is limited to 3. (e.g. yd$ ^3 $, in$ ^3 $, cm$ ^3 $, m$ ^3 $ or mm$ ^3 $ )

$ 4yd \times 2m = 8.749yd^2 $
$ 15 \times 4cm = 60cm $

The dimension of the dividend must always be greater than or equal to that of the divisor!

$ 25in^2 \div 5in = 5in $
$ 99 \div 6 = 16.5 $

Plus/minus percentage:
\( \begin{matrix} 7.7 &-&7\% &=& 7.161\\ &&\Updownarrow \\ &-&0.81 &=& 7.161\\ & & & &\\ 5.4 \text{ m} &+&15\% &=& 6.21 \text{ m}\\ &&\Updownarrow \\ &+&0.81 \text{ m} &=& 6.21 \text{ m} \end{matrix} \)

Multiplication of percentage: (How much is n% of x)
\( \begin{matrix} 12.3 \text{ m} &\times&15\% &=& 1.845 \text{ m}\\ &&\Updownarrow \\ &\times&0.15 &=& 1.845 \text{ m} \end{matrix} \)

Division of percentage: (x is n% of y)
\( \begin{matrix} 78.9 &\div&12\% &=& 657.5\\ &&\Updownarrow \\ &\div&0.12 &=& 657.5 \end{matrix} \)

The “M+” button is not only to store values ²⁾, it accumulates the values and calculates also the average.

After you have entered all positive values ​​with “M+” and all negative values ​​with “M-”,

1. you get the total with “RCL”.
2. Then press “M+” one more time to get the average.
3. Then press “M+” one more time to get the number of all values.