Working with the DWO » The calculation box and calculator  


Calculation box

With some of the exercises in the DWO you can make use of a calculation box.
explanation of calculation box

Calculator

In almost every calculation box the calculator is also available.
If you want to use the calculator, you first have to click the calculator button.
After that, you can fill in you calculation!

Example
Calculate the average of 5.3  4.8  7.2  6.4  and  8.3.

1. First click the calculator button.
    calculator button

2. The calculator will appear in the calculation box.
    calculator appears in calculation box

3. Key in you calculation an click enter. The answer will be shown.
    filled in the calculation

4. You can copy-paste the answer to the answer box. Very handy, especially with long answers. It will also avoid mistakes when copying the answer to the answer box by hand. It might also save you time. You can do this by selecting the answer and right clicking on the selection to open the short menu.
    calculation box with copy      answer box with paste
Right click on the cursor to open the short menu in the answer box.

5. Remember to press enter to check your answer.
    answer box with check mark

LOOK OUT

There is a dark box around the calculator. With it, you can see if the calculator will exit the screen. In the example below the answer, of course, cannot be 2066. In this case you have to split your calculation to two calculators in two lines underneath each other.
example where calculator leaves the calculation box


NOTE

Sometimes the calculator will give less decimals than you need.
Click on the calculator for more decimals.
example with not enough decimals


LOOK OUT

Sometimes the calculator will be off a couple of trillionths.
Apparently this is due to a minor bug in how numbers are stored in the programming language. Don't mind these numbers and round off. Often you will only see this is if you do what is said in the note above.
Example with deviation of three trillionths