I can do single addition under 1 second … can you?
Source
https://www.mathsisfun.com/games/reaction-math.html
Reaction Math screenshots
Reaction Math
| Rating: | [0 / 5 - 0 Votes] |
| Tags: | Mathematics |
| Developers: | Math is Fun |
| Publishers: | Math is Fun |
| Language: | English |
| Play Mode: | Single Player |
| Library: | Flash Games |