Natural number is the number generated when people count (such as "there are three apples"), so the number used to represent the number of objects is called natural number. There is no object, of course it can be represented by "0", so "0" is also a natural number. Simply put, it is an integer greater than or equal to 0.

Divide the unit "1" into several parts on average, and the number representing such a part or parts is called a fraction.

Denominators 10, 100, 1000, ... can be written on the right side of integer digits, separated by dots, and numbers used to represent ten points, percent and thousandths are called decimals.

The decimal places are finite decimals, which are called finite decimals.

The decimal places are infinite decimals, which are called infinite decimals.

The decimal part of a number, starting from a certain place, one or several numbers appear repeatedly in turn, which is called cyclic decimal.

The cyclic part starting from the first digit of the decimal part is called pure cyclic decimal.

Loop segments that do not start with the first decimal part are called mixed loop decimals.

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1010,000 is 100,000,1000,000 is 1 million,101 million is 10 million,

10 Ten million is one hundred million, ...

In a fraction, the number indicating how many parts the unit "1" is divided into is called the denominator of the fraction, and the number indicating how many parts to take is called the numerator of the fraction, and one of them is called the fractional unit.

Number name to the right of decimal point:

The first place is the tenth place, and the unit is one tenth (0.1);

The second place is the percentile, and the unit is one percent (0.01);

The third place is one thousandth, and the unit is one thousandth (0.005438+0); ……

Integer is the largest, and the comparison between decimal and fraction should be unified before comparison.

This is all I found. I hope I can help you. Ha ha!