1. Mathematics is a subject that needs patience and care, and requires careful thinking and calculation. A person who is very troublesome and lacks patience and care will encounter difficulties in the process of learning mathematics, and it is difficult to understand and master mathematical knowledge.

2. Mathematics is a subject that needs constant practice and consolidation, and needs a lot of practice to deepen the understanding and mastery of knowledge. A person is too troublesome to spend time and energy on practice and consolidation, so he will encounter difficulties in the process of learning mathematics and it is difficult to get good grades.