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SAI INTERNATIONAL SCHOOL


                                                CBSE CURRICULUM


                                                       Class: VI

                                                 Lesson Note 10.1


                                             SUBJECT : Mathematics




               CH: 10 -The other side of zero


               SUBTOPIC: Basic Knowledge

                     Recall that the very first numbers we learned about in the study of mathematics were
                       the counting numbers 1, 2, 3, 4, … Then we learned that there are even more numbers!
                       For example, there is the number 0 (zero), representing nothing, which comes before
                       1. We then learned about more numbers that exist between the numbers 0, 1, 2, 3, 4,
                       … , such as 1/2 , 3/2 , and 13/6 . These are called fractions. But are there still more
                       numbers?
                     Can there be a number less than 0?
                     The numbers less than zero are the negative intgers.
                     There are negative numbers also exist. If we put the whole numbers and the negative
                       numbers together, the new collection of numbers will look like -4,-3,-2,-1, 0, 1,2,3,4
                       and so on. This collection of numbers is known as Integers.
                     In this collection, numbers above zero are  1, 2, 3...are said to be positive integers
                       and numbers below zero – 1, – 2, – 3 ... are said to be negative integers.
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