Calculation Training For Brain vs 素数チャレンジ！

"Calculation Training" is a brain-training app for practicing arithmetic that can be enjoyed by everyone—from elementary school children to seniors. It features simple, game-like controls and offers a variety of calculation problems. Use it for practicing arithmetic (mental math) from elementary school level, warming up your brain before studying, or maintaining cognitive health and mental sharpness for older adults. - Choose Your Training This app lets you practice the four basic arithmetic operations that form the foundation of math. You can focus on a single type of calculation or try mixed problems that include all types. * Addition * Subtraction * Division * Multiplication * Mixed arithmetic (all operations) - Adjustable Difficulty There are five difficulty levels, ranging from “Easy” to “Very Hard.” You can choose the level that matches your ability, making practice efficient and effective. By solving problems repeatedly and gradually increasing the difficulty, your calculation speed will naturally improve, helping you enhance your mental math skills. - Training Modes This app includes five training modes. Your best score is recorded in each mode, allowing you to track your progress and improvement. ◆ Time Limit Mode Solve as many problems as possible within a set time. The time limit can be adjusted from 20 to 90 seconds in 10-second increments via the Settings menu. Perfect for quick practice sessions or more focused, longer training. ◆ Fixed Problem Mode Challenge yourself to solve a set number of problems as quickly as possible. The number of questions can be adjusted from 10 to 50 in increments of 10 via the Settings menu. ◆ Endless Mode Each correct answer extends the time limit. Answer quickly and continuously to solve more problems and achieve a higher score. ◆ Long Calculation Mode Solve longer expressions that include both addition and subtraction. ◆ Column Method Mode Practice vertical calculations (column method). Train your speed in solving multi-digit addition and subtraction problems, up to three rows. - Input Options For multi-digit answers, you can choose whether to input digits starting from the highest or lowest place value. There are also two types of number pad layouts, allowing you to select the one that feels most comfortable. - Online Rankings Compete with players around the world through global online rankings. In Time Limit Mode, longer time limits yield higher scores. In Fixed Problem Mode, solving more problems results in higher scores. --- Calculation Training Brain Training / Math Game / Educational App for Kids Free ---

素数を見抜くシンプルで奥深い脳トレゲーム！ 表示された数字が「素数」か「素数ではないか」を判断するだけの簡単ルール。 遊びながら自然と数学力とひらめきが鍛えられます。 ■ 遊び方 ・表示された数が素数かどうかをボタンで回答 ・正解・不正解がすぐに分かる ・素数でない場合は素因数分解も表示 ■ 特徴 ・直感的に遊べるシンプル設計 ・連続正解数と最高記録を記録 ・スキマ時間でサクッと脳トレ ■ 難易度 ・通常モード（2〜999） ・大きい数モード（1001〜99,999）※プレミアム機能 ■ プレミアム機能 ・広告の非表示 ・大きい数モードの解放 通勤・通学やちょっとした空き時間に、 あなたの「素数力」を試してみませんか？