To add the numbers you have to separate groups units tens hundreds etc.
You can do it by dragging and dropping them with the mouse.
Then you can add similar groups all together by aproaching one to an other an eventualy clicking on them.
After "graphical" adition is finished you can write down the result in the text field input just after = sign.
If you do not want to play with figures you can write the result at once.
To check your answer is correct click on the elephant.
Enjoy!
designed by Witold Wojcik