"数学" (すうがく) means mathematics or math. It's the abstract science of number, quantity, and space, often involving calculations, problem-solving, and logical reasoning. It's a fundamental subject taught in schools. For example, "私は数学が得意です" (I am good at math).

数や図形、量などを研究する学問です。計算や論理を使います。例：数学のテスト。