Practice of addition.
Training of brain.
Practice of speed reading.
Additionally, there might be various effects.
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It can enjoy this application program by a very simple operation.
It challenges the calculation of ten questions.
The place to be input is taped, and the figure to be input is taped.
It taps on a "answer button" at the end when everything is answered.
If it is a correct answer, time is displayed.
If it is a new high, it is registered automatically.