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Compare the size of two numbers, what to compare first, the number of digits
Compare the size of two numbers, what to compare first, the number of digits is as follows:

When comparing the sizes of two numbers, first look at the number of digits, the number with more digits, and the number with the same digits. From the high position, it is larger than the number with the same digits. When there is little difference between two numbers, it is described by or, and when there is a big difference between two numbers, it is described by or.

Mathematics [English: Mathematics, from ancient Greece μ? θξμα(máthēma); Often abbreviated as math or maths], it is a discipline that studies concepts such as quantity, structure, change, space and information.

Mathematics is a universal means for human beings to strictly describe and deduce the abstract structure and mode of things, and can be applied to any problem in the real world. All mathematical objects are artificially defined in essence. In this sense, mathematics belongs to formal science, not natural science. Different mathematicians and philosophers have a series of views on the exact scope and definition of mathematics.

Mathematics (hanyu pinyin: shùXué;; ; Greek: μ α θ η μ α κ; English: mathematics or maths), its English comes from the ancient Greek word μ θ η μ α, which means learning, learning and science.

Ancient Greek scholars regarded it as the starting point of philosophy and the "foundation of learning". In addition, there is a narrow and technical significance-mathematical research. Even in its etymology, its adjective meaning is used to refer to mathematics whenever it is related to learning.

Its plural form in English and plural form in French plus -es constitute mathématiques, which can be traced back to the neutral plural mathematica in Latin. Cicero translated it from the Greek plural τ α α θ ι α κ? (ta mathē matiká).

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.

Mathematics originated from the early production activities of human beings, and the ancient Babylonians had accumulated some mathematical knowledge, which could be applied to practical problems. As far as mathematics itself is concerned, their mathematical knowledge is only obtained through observation and experience, and there is no comprehensive conclusion and proof, but their contribution to mathematics should also be fully affirmed.