The significance of decimal is that it provides a way to express fractions, which enables us to describe and calculate some numerical values more accurately. The nature of decimal refers to some characteristics of decimal, such as the basic unit of decimal, the position of decimal, the addition and subtraction of decimal, etc. The relevant knowledge is as follows:

1. First, let's look at the meaning of decimals. Decimal is a decimal number, and its significance lies in dividing a whole into several equal parts, and the size of each part can be expressed in decimal. Through decimals, we can express fractions more accurately and then calculate some values more accurately.

2. Next, let's look at the essence of decimals. First of all, the basic units of decimals are one tenth, one hundredth, one thousandth and so on. These basic units are expressed by numbers after the decimal point. For example, 0. 1 means one tenth, 0.0 1 means one percent, 0.00 1 means one thousandth, and so on. Secondly, the position of the decimal point is different, and the value will be different.

The role of decimals

1. In ancient times, people began to use fractions to represent some numerical values that could not be expressed by integers. For example, an apple is divided into two halves, and each half can be represented by a score. With the passage of time, people began to use decimals to represent some smaller values. For example, an apple is divided into 1000 parts, and each part can be represented by a decimal.

2. The development history of decimals can be traced back to16th century, when some mathematicians began to study decimals and applied them to mathematics. /kloc-in the 7th century, the French mathematician pierre de fermat put forward the representation method of decimals and proved its correctness. Since then, decimals have been widely used in mathematics and science.

3. Decimals have a wide range of functions. First of all, decimals are the basis of measurement and calculation. In physics, engineering, economy and other fields, decimals are used to measure and calculate various physical quantities, such as length, weight and area. In business, decimals are used to calculate prices, profits, discounts and so on.

4. Secondly, decimals are an expression of fractions. By using decimals, we can express some fractions more accurately and perform four operations on them. In addition, decimal is also an approximate method. In some cases, we may need to approximate a number to a decimal in order to better understand and handle it.