Opposite of Natural numbers<\/strong><\/p>\nIn mathematics, Rs. 200 profit means +200 and Rs. 200 loss means -200, +2\u00b0C means 2\u00b0C rise in temperature and -2\u00b0C means 2\u00b0C fall in temperature, +4 km means 4 km above the sea level and – 4 km means 4 km below the sea level. Similarly, in natural numbers, the opposite of 1 is -1, opposite of 2 is -2, opposite of 3 is -3, and so on. \nWe, therefore, need to extend the whole number system to include such \u2018negative numbers\u2019 which are opposite of natural numbers. In order to have opposites of 1, 2, 3,… we introduce -1, -2, -3,…. All the numbers with \u2018+ve\u2019 sign are called positive numbers and all the numbers with \u2018-ve\u2019 sign are called negative numbers. Zero is neither positive nor negative. \nThis new collection of numbers are called integers which include all positive numbers, negative numbers, and zero. Numbers 1, 2, 3,… are called positive integers and -1, -2, -3,… are called negative integers.<\/p>\n
Note:<\/strong> \nSet of negative numbers, positive numbers, and zero together are called integers<\/strong>.<\/p>\nNatural numbers (N) = 1, 2, 3,4,… \nWhole numbers (W) = 0,1,2, 3,… \nIntegers (Z or I) = -3, -2, -1, 0,1, 2, 3 ,… \n \nOrdering of Integers<\/strong><\/p>\nWe know that a whole number is greater than any whole number to its left on a number line. Same is true for the integers also. The number line given below shows whole numbers and negative numbers with zero in the middle. \n \nAll the positive integers (which are greater than zero) lie on the right side of zero and all the negative integers (which are less than zero) lie on the left side of zero at equal distance from each other. A number placed to the right of another is greater than it. \nExamples:<\/strong> \n7 > 3 as 7 is to the right of 3. \n0 > -1 as 0 is to the right of-1.<\/p>\nNote:<\/strong> \n1 is the smallest positive integer but -1 is the largest negative integer, e., -1 is always greater than -2, -4,…<\/p>\nFrom the examples, we note that:<\/strong> \n(a) Since 0 is to the right of every negative integer, so 0 is greater than every negative integer. \n(b) Since 0 is to the left of every positive integer, so 0 is less than every positive integer. \n(c) Every positive integer is to the right of every negative integer. Hence positive integers are greater than negative integers. \n(d) The greater the number is the lesser to its opposite.<\/p>\nAbsolute value of integers<\/strong> \nThe absolute value of an integer is its numerical value regardless of its sign. It indicates its size or magnitude. So, absolute value is either zero or positive. It is never negative. The absolute value of 6 is written as | 6 | = 6 and absolute value of -5 = | -5 | = 5. \nNote that | 0 | = 0; |-117 | = 117; but – | 117 | = -117.<\/p>\nExample 1:<\/strong> Write the opposite of each of the following: \n(a) 6 km north \n(b) 14 km above the sea level \n(c) Depositing money in the bank Solution \n(a) 6 km south \n(b) 14 km below the sea level \n(c) Withdrawing money from the bank<\/p>\nExample 2:<\/strong> Find the absolute value of | -51 | and -I 13 |. \nSolution: Absolute value of (-51) is | -51 | = 51 Absolute value of -| 13 | = -13<\/p>\n","protected":false},"excerpt":{"rendered":"What is an Integer and give some Examples Introduction While studying the properties of whole numbers, we found that the closure property does not hold good for the subtraction of natural numbers as well as whole numbers. This is because of the following: 12 – 10 = 2 is a whole number as well as … Read more<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[5],"tags":[2366,2363,2364,2365],"yoast_head":"\nWhat is an Integer and give some Examples - CBSE Library<\/title>\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\t \n\t \n\t \n