The progress rate of each unit of primary school mathematics is as follows: try your best.

The advance rate between length units: millimeter, centimeter, decimeter, meter is ten, and the advance rate between meter and kilometer is thousands; The forward speed between weight units: the forward speed between grams, kilograms and tons is thousands; The advance rate between time units: the advance rate between seconds, minutes and hours is 60. Area unit: the propulsion rate between square millimeter, square centimeter, square decimeter and square meter is100; The forward speed between unit of volume: the forward speed between milliliter and liter is thousands.

Introduction to primary school mathematics;

Primary school mathematics is to teach children a series of knowledge about number, four operations, calculation formulas of figures and long-chain balance, unit conversion and so on through textbooks, which lays a good mathematical foundation for junior high school and daily life calculation. Frieden Noel, a Dutch educator, believes that mathematics comes from reality and must be rooted in reality and applied to reality. Indeed, modern mathematics requires us to observe the world from the perspective of mathematics and explain the world with the auspicious language of mathematics.

Judging from the mathematics learning psychology of primary school students, the learning process of students is not a passive absorption process, but a reconstruction process based on existing knowledge and experience. Therefore, learning while doing and learning while playing will make children learn more actively. From our educational goal, while imparting knowledge, we should pay more attention to cultivating students' comprehensive ability of observation, analysis and application.