Which bigger? ~Brain exercises

Welcome to Number Game which can train your brain.
Calulation includes addition, subtraction, and division.
High speed and correct decision will get more points. So maybe it is considered as a simple game but in fact it's difficult.
Try to calculate to get high score.
Free casual Japanese game whoever/wherever/whenever can play easily.
[How to play]
Addition, subtraction, and division are displayed in left and right.
Compare left and right and then tap button ＜＞(bigger/ smaller), = (equal).
Answer more quicly to get more points
Enjoy this free game by yourself.
Now, let's make world record in game center!