The so-called sense of number is conceptually a feeling and understanding of mathematics. It can actively and consciously understand knowledge and use the meaning of "number". This is an invisible psychological activity and an important mathematical accomplishment. In fact, it refers to a person's deep understanding of logarithm and budget. It is a person's accurate and rich sense of number. Good sense of number is the key condition and foundation of learning mathematics knowledge, and also an important standard of personal mathematical literacy. Its significance lies in: the formation of number sense can stimulate students' interest in mathematics, improve students' ability to flexibly use mathematical knowledge and mathematical operation, promote primary school students to learn to think about problems with mathematical logic thinking, improve students' ability to analyze and solve problems, so as to cultivate primary school students<br>
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