For example, the following have the same meaning.Īlso, the following have the same meaning Therefore, the number of pluses and minuses can be replaced. If you have lost 3kg of weight, then you can say that you have successfully gained -3kg of weight. In that case, the majority of people use their current weight as a reference point (zero). By using plus and minus, we can express an increase or decrease from a standard.įor example, let’s consider losing weight by going on a diet. On the other hand, numbers to the left of zero are negative integers. In the following figure, with zero as the reference point, the numbers to the right are positive integers (natural numbers). P ositive integers (natural numbers) and negative integers indicate how far away they are from the reference point (0). Once you learn that zero has the concept of a standard, you will understand what a positive and negative integer means. Positive Integers (Natural Numbers) and Negative Integers Indicate Increase or Decrease from a Reference Given this fact, we can realize that it’s not strange to use negative numbers as well as positive numbers since zero has a meaning of indicating a standard, many people use negative numbers in their daily lives. In a city where it snows, many people will experience negative temperatures. If the temperature is lower than 0☌, the number is negative. By using zero as a standard, we use positive and negative numbers, depending on whether the number is greater or less than zero.įor example, we use temperature in our daily lives. However, 0 does not just indicate that it does not exist. When learning about negative integers, many people get confused because they may think that there are numbers that are smaller than non-existent ones. If non-existence means zero, the concept of a negative doesn’t make sense. For example, if you have \$1, and if you spend it, the money you have is \$0. In general, 0 (zero) indicates that there is nothing. 5 Use Positive and Negative Numbers to Add and Subtract.4 Exercises: Addition and Subtraction of Positive and Negative Numbers.3.2 Why Negative Subtraction Is Positive?.3.1 Learn How to Add Negative Numbers by Replacing.3 Addition and Subtraction of Negative Numbers.2.2 Rules for Subtracting Positive Numbers.2.1 Using Parentheses in Addition of Positive Numbers.2 Addition and Subtraction of Positive Numbers.1.2 How to Distinguish Between Large and Small Numbers, and Absolute Value.1.1 Positive Integers (Natural Numbers) and Negative Integers Indicate Increase or Decrease from a Reference.1 0 (Zero) Is Used to Indicate a Criteria.
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