![]() Recall that a number line is a straight horizontal line with numbers placed at even intervals that provides a visual representation of numbers. We have learnt how to represent whole numbers on a number line. Negative and Positive Integers on a Number Line ![]() For instance, + 5 can also be written as simply 5. It is important to note here if no sign is associated with a number, it is read as a positive number. Hence, here the symbol has been used for the addition of two numbers. This will be read as “ five plus three “. We can see here that the “ + “ is between two numbers. Similarly, + 17 will be read as “ plus seventeen “. However, the context in which this symbol is used makes it clear, whether we mean to use it for a positive integer or addition. We use the symbol “ + “ to denote positive integers and the same symbol is used to indicate addition. Hence, here the symbol has been used for the subtraction of two numbers. This will be read as “ five minus three “. We can see here that the “ – “ is between two numbers. Similarly, – 17 will be read as “ minus seventeen “. However, the context in which this symbol is used makes it clear, whether we mean to use it for a negative integer or subtraction. We use the symbol “ – “ to denote negative integers and the same symbol is used to indicate subtraction. are natural numbers and are called positive integers while the numbers – 1, – 2, – 3 etc. If we combine these negative numbers with the positive ones, together we get a set of numbers which we call integers. So, – 1 is called the negative of 1, -2 is called the negative of 2 and each negative number is the opposite of its positive counterpart. These numbers are called minus one, minus two, minus three etc. Z = What are negative and positive integers?Ĭorresponding to natural numbers, 1, 2, 3, 4, 5 …… etc, we create new numbers, -1, -2, -3, -4 ,-5 and so on. ![]() The set of integers is represented by Z and can be written as – Hence, we can say that integers are the collection of whole numbers and negative numbers. In other words, an integer is a whole number that can be positive, negative, or zero.
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