How to draw the third unit of the mathematical mind map of the second volume of the fourth grade of Qingdao Publishing Group

Summary form.

Organize mind maps for the mathematics unit in the first volume of the fourth grade. Through mind maps, we can learn mathematics better. Today I brought you a mind map for organizing the mathematics unit in the first volume of the fourth grade. Let’s take a look at it! The mind map for organizing the mathematics unit in the first volume of the fourth grade. Appreciate the knowledge of the mathematics unit in the first volume of the fourth grade: understanding of large numbers 1. Ten thousand is ten thousand One hundred thousand, 10 hundred thousand is one million, 10 one million is ten million, and 10 ten million is one hundred million. The advance rate between two adjacent counting units is "ten". This counting method is called decimal counting. Pay special attention to: the difference between counting units and digits. 2. When using numbers to express numbers.