The large numbers mentioned in primary school mathematics are based on numbers within 10,000, and the numbers with more than 100 million digits are called large numbers.

Large numbers have five meanings, as follows:

1. The trader term refers to the first few digits of the exchange rate.

In mathematics, it refers to the larger of two numbers.

3. Represents the 72nd power of 10.

4. In programming, large numbers represent numbers exceeding 32 bits.

5. The life span of Destiny. For the first time in the history of the Eastern Zhou Dynasty: "I saw Du Bo and Zuo Ru cursing in unison:' The bad king has no way! If you don't cultivate morality, you kill innocent people in vain. Today, the number of people has been exhausted, and we have come to avenge you. "Give me back my life!" "

Significance and counting method of four operations.

Addition meaning, subtraction meaning, multiplication meaning, division meaning, addition, subtraction, division, multiplication and check calculation.

Algorithms and simple methods, elementary arithmetic.

Additive commutative law (a+b=b+a), additive associative law (a+(b+c)=(a+b)+c), multiplicative commutative law (a*b=b*a), multiplicative associative law (a*(b*c)=(a*b)*c), and multiplicative distributive law.

Subtraction property: a-(b+c) = a-b-ca-(b-c) = a-b+c.