The explanation of primary school mathematics teaching terms is an important means to impart basic knowledge of primary school mathematics. Mathematics is a compulsory course for primary school students. The purpose of teaching is to explain nouns: to enable students to understand and master the most basic knowledge of quantitative relations and spatial composition, to calculate four integers, decimals and fractions correctly and quickly, to initially understand some of the simplest ideas in modern mathematics, to have initial logical thinking ability and spatial concepts, and to use what they have learned to solve simple practical problems in daily life and production. The specific requirements of mathematics teaching in primary schools are noun interpretation: (1) mastering the basic knowledge of integers, decimals, fractions, percentages, proportions and simple equations; Can calculate four points of integer, decimal and fraction correctly and quickly, and can solve simple equations; Mastering some common quantitative relations and methods to solve application problems can solve some simple practical problems. (2) Master the basic knowledge of simple geometric figures, and be able to calculate the perimeter, area and volume of some geometric figures, and carry out simple land survey and earthwork calculation. (3) Master some commonly used measurement units and preliminary measurement methods. (4) Master some preliminary knowledge of statistics and be able to draw simple statistical charts.