King of Calc 2

Think you can get better at mental math? Meet King of Calc 2. King of Calc 2 is an educational app that builds on flash mental math with subtraction and random addition/subtraction challenges. If regular flash calculation is not enough for you, this game gives you more ways to train. Play like a game, calculate in your head, and you may find your mental math improving before you know it. Already confident? Try Survival Mode and compete with players around the world for the highest round count. Still learning? Choose level-based challenges and practice at your own pace. Aim to clear the ultimate King level. Main features 【King of Addition】 Add the numbers that appear one after another in your head. 【King of Subtraction】 Start from the number requested by the king, then subtract each number that appears. 【King of Calculation】 Add and subtract the numbers that appear one after another. 【King of Numbers】 Count the King of Calc icons that appear and add the totals in your head. 【King of Memory】 Memorize number sequences as they appear, then answer the sequence position requested by the king. 【Survival Mode】 Keep playing until you miss. Compete for round counts on Game Center leaderboards. 【Settings】 ・Turn sound on or off. ・Turn vibration on to vibrate when an answer is incorrect. ・Turn the countdown timer off to pause the answer-screen timer and think at your own pace. ・Set number display time from 0.3 to 1 second. ・Turn wallpaper on or off.