I made this because my mental arithmetic got quite slow and I wanted to improve it. I'm sharing it because some others might need it too.
You may use the keyboard for typing. Press space to continue then.
There is also mouse/touch support. To see a cursor you need to activate it in the menu.
P#87595 2021-02-13 18:48 ( Edited 2021-02-14 16:28)
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