10 is divided into 9 and 1, which is really naughty. 7, 3, 8 and 2 are also naughty. Blow 6 liters of 4 (6 like a whistle, 4 like a flag). Small hands are really clever (let students shake hands like dividing 10 into 5 and 5).

Mathematics Mathematics is a discipline that studies the concepts of quantity, structure, change, space and information, and belongs to a formal science from a certain point of view.

Mathematics is produced by counting, calculating, measuring and observing the shape and motion of objects through abstract and logical reasoning. In many countries and regions, mathematics has become a part of education.

It is applied in different fields, including science, engineering, medicine, economy and finance. Mathematicians also study pure mathematics, which is the substantive content of mathematics itself and does not aim at any practical application.

In ancient China, mathematics was called arithmetic, also called arithmetic, and finally it was changed to mathematics. Arithmetic in ancient China was one of the six arts.