Because 1 Beijing = 1x 10 16, 1 Beijing equals 1 trillion = 1 trillion.

The usage of 1 trillion = 10 12 has been recorded in ancient documents in China, and the units of decimal numbers from big to small are one, ten, hundred, thousand, ten million, trillion, Beijing, Hong, Hong, Gou and Jian.

How to teach primary school mathematics?

First, improve the mathematical thinking ability

Pupils have a weak mathematical foundation and are frustrated with the difficult problems in mathematical thinking. Teachers should guide students to learn to dig out the core of the problem from what they have learned, and then seek solutions to the problem. Through the application of knowledge, students can lay a solid mathematical foundation and cultivate their thinking ability in solving problems and mathematics.

Second, cultivate interest in mathematics

Pupils are not very motivated to learn mathematics. Teachers should proceed from reality and try their best to guide students to think about mathematics problems with problems in life. For example, when shopping, you need to calculate the discount price, or design a simple game rule, and you need to draw up rules and calculate scores.

In this way, students can be visually guided into the learning state of mathematics and have a strong interest in mathematics courses.

Third, pay attention to the process of mathematical thinking

In the process of teaching, teachers need to pay attention to students' mathematical thinking process, not only to the solutions and answers of problems, but also to how students view this method. By exploring students' thinking process, students' mathematical quality and potential can be effectively developed and tapped.

Fourth, pay attention to the consistency of mathematics.

In teaching, we should pay attention to the consistency of mathematical knowledge, that is, whether the learned knowledge can be successfully applied to solving new problems. For example, primary school students need to use all the basic knowledge of mathematics from grade one to grade four. Only by stringing these knowledge together can we deeply understand the essence of mathematics.