This question mainly examines the comparison of positive, negative and zero, so you should master it skillfully. Positive numbers > 0 > negative numbers. When several negative numbers are relatively large, the greater the absolute value, the smaller the negative number, and you can solve it accordingly. Between negative 1 and 0, and between negative 1/2 and 0, of course, there are countless negative numbers, such as-1/3,-1/4 ... There are infinitely many negative numbers, and they all have one feature, that is, negative two less than 1.

Positive numbers, negative numbers, 0 and fractions constitute rational numbers. Positive numbers are greater than 0, negative numbers are less than 0, and positive numbers are greater than negative numbers. A positive number refers to a number greater than 0, usually represented by "+". For example, 1, 2, 3, 4 and so on are all positive numbers. Positive numbers indicate positive growth trends, such as population growth, rising prices, rising stock prices, etc.

In real life, such as our height, weight and other indicators are positive. Next, let's look at negative numbers. A negative number refers to a number less than 0, usually represented by "_". For example,-1, -2, -3 and -4 are all negative numbers.

Negative numbers indicate negative downward trends, such as temperature drop, inventory decline, economic recession, etc. In real life, for example, temperature and loss are negative. Zero is a very special number, indicating that there is no quantity or the quantity is 0.

It plays a vital role in basic mathematical operations, such as addition, subtraction, multiplication and division, and any number 0 is 0. In addition, zero is also the origin on the number axis, which separates positive numbers from negative numbers.

Positive numbers, negative numbers and zeros are widely used in mathematics;

They are the basic concepts in linear algebra, calculus and geometry in algebra learning. In physics, they are used to describe physical quantities such as strength, speed and force. In finance, they are used to describe economic indicators such as stock market and exchange rate. In engineering, they are used to describe the equivalence of current, voltage and power.