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Mathematical calculations combined with four idioms learning educational games.
Idiom four operations is a combination of four mathematical operations idiom learning games education through fun way to learn about numbers and idioms, as well as four practice simple mathematical operations. * 464 digital idioms currently included, there are more than 1800 kinds of arithmetic questions, more than 13 million kinds of combinations of the subject changes. * Digital idiom review: always check and review. * Four arithmetic exercise: Exercise four mathematical operations without pressure. * Idiom four operations: arithmetic combination idiom game mode, make learning more fun. Source code can be downloaded here: https://github.com/cnyaw/idiomcalc