My favourite subject is math, so I'm good at math.

我最喜欢的科目是数学，因此我数学好。

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With Khan's help, the cousin got good at math, and Khan launched a new career.

VOA: standard.2010.03.26

And I've also been good at Math and Science in the past,

而且我过去数学和科学都学得很好。

学习机械工程 - SpeakingMax英语口语达人

But, yeah, you have to be good at math. But mainly,

但是，是，数学必须好。但是主要是，

要成为建筑家 - SpeakingMax英语口语达人

"I'm not good at math, and there's a lot of calculations involved, " she confided.

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I'm not good at math but if you look at it we have to win games right now.

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Limiting beliefs, such as 'I'm not smart enough' or 'I'm not good at math, ' can keep people from attempting more complex challenges.

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