Rational numbers are divided into positive numbers and negative numbers. Negative numbers refer to a kind of numbers with negative signs, and positive numbers refer to unsigned classes including 0. So according to the classification of numbers, 0, 1 belongs to the category of positive numbers, so 0 1 is a positive number. 0 is not a positive number, 1 is a positive number, and positive and negative numbers are relative concepts. In fact, there are no negative numbers in nature. Positive and negative numbers also have practical applications in daily life. For example, the positive and negative temperature indicates the degree of heat and cold, and the positive and negative bank account balance indicates the deposit and withdrawal situation.
For example, people define the temperature at which water begins to freeze as 0 degrees, so those above 0 degrees are called "above zero" (positive temperature) and those below 0 degrees are called "below zero" (negative temperature). People define the sea level as 0, and those above the sea level are called positive altitude, and those below the sea level are called positive altitude: indicating a value greater than zero. Positive numbers are usually used to indicate positive things, such as positive displacement or increase. On the number axis, positive numbers are to the right of zero.
Negative number: indicates a numerical value less than zero. Negative numbers are usually used to indicate things with negative meanings, such as negative displacement or reduction. On the number axis, negative numbers are to the left of zero. Positive numbers and negative numbers can be combined by addition, subtraction, multiplication and division to produce different results. For example, positive numbers plus positive numbers, negative numbers plus positive numbers get positive numbers or negative numbers, and negative numbers plus negative numbers get negative numbers.
The concepts of positive and negative numbers
Positive and negative numbers can be represented on the number axis, where the origin on the number axis usually represents zero. Positive numbers are on the right of the origin, and negative numbers are on the left of the origin. The direction of the number axis indicates the growth direction of the number. Positive numbers plus positive numbers get positive numbers, negative numbers plus negative numbers get negative numbers, and positive numbers plus negative numbers or negative numbers plus positive numbers depend on their values.
The concepts of positive numbers and negative numbers are widely used in mathematics, such as algebra, geometry, physics and other fields. They are the basis for describing and solving various problems in mathematics. In addition, the concepts of positive and negative numbers also have practical applications in daily life, such as indicating temperature and bank account balance.