ハラハラ！計算ドリル～ゲームで脳トレができる算数の暗算問題計算ゲーム～

This apps is not just a calculation game!

Watch out for the moving bomb while you solve the calculation questions.

There are three level, easy, normal, and difficult.
Each 20 calculation questions.

It is possible for you to solve the calculation questions endlessly in the endless mode.
The speed of moving bomb gets faster!

How to Play
①Tap the button,"プレイ".
②Select the level, "かんたん（easy）", "ふつう（normal）",
"むずかしい（difficult）" or "エンドレス（endless）".
③Start the game!
④Solve the easy questions.
⑤If the bomb approaches to the dog which sits above,
avoid the bomb by tapping the dog
⑥Compete the time for solving 20 questions.
(※The game finishes if the bomb gets to the dog.)