数学 (shù xué): คณิตศาสตร์; คณิตศาสตร์ (ในฐานะวิชาเรียนหรือสาขาวิชา)

Mathematics is my favorite subject.

He got a perfect score on the math exam.

To learn mathematics well, you need to do a lot of practice.

The math teacher assigned a lot of homework.

My younger sister is very good at math.

He spends two hours every day reviewing math.

This math problem is too hard; I don't know how to do it.

Mathematics is a foundational course for many majors.