價格：免費
檔案大小：13.1 MB
版本需求：需要 iOS 11.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
It is a super hard math game.
You will have to perform the addition or subtraction operation with a given number of digits to get the correct answer. The order of the numbers you choose will be the order of the numbers in the calculation
The number of digits will increase according to the score as below:
* score < 10 : 2 number
* 10 < score < 20 : 3 number
* 20 < score : 4 number
支援平台：iPhone