CEDICT
mathematics
Wiktionary
討論數量、形狀及它們之間的關係的科學。包括算術、代數、幾何、三角、解析幾何、微分、積分等。
重編國語辭典
She studies mathematics.
Source: Tatoeba
Are you good at mathematics?
Are you good at math?
Are you good in math?
Tom isn't good at math.
Tom is not good at math.
Tom is bad at math.
He is very good at math.
I am not good at mathematics.