價格：免費
檔案大小：12.7 MB
版本需求：需要 iOS 8.4 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
IntegerPlusMinusCalculator is a calculator that can be used to experiment with calculations of mathematical expressions such as +605+6-18+5, -75-8+3 and --9.
Unlike other calculator apps it is focused on teaching about how to best look at a sum of (plus and minus) terms. Therefore a plus sign is automatically put in front of the first number unless it is negative.
支援平台：iPhone, iPad