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SAI International School
                                                      CLASS-VI

               Mathematics
               CHAPTER-6: Integers
               LESSON NOTES-2



               SUBTOPIC: Ordering of integers and Additive inverse


                     It is important to understand here the order of integers.
                     As we move to the right the value of integers is increasing.

                     Hence 7 is greater than 4, 4 is greater than 1, 0 is greater than -1, -1 is

                       greater than 2 and so on.
                     Therefore, – 3 < – 2, – 2 < – 1, – 1 < 0, 0 < 1, 1 < 2, 2 < 3 so on.

                     By looking at the number line we can see what integers lie between two
                       integers and which the greater integer is.

                     The number line also tells us how much we need to move in order to go from
                       one integer to another.



                   Ex-Compare the following pairs of numbers using > or <

                             0 > -8,     -5 < 5,   -1> -15


               Additive Inverse of an integer:

                     Two integers whose sum is zero are called additive inverses of each other.

                       They are also called the negatives of each other.

                     Additive inverse of an integer is obtained by changing the sign of the integer.
                       For example, the additive inverse of +5 is –5 and the additive inverse of –3 is

                       +3.
               Successor and Predecessor of an integer:


                    In integer number line, number to left is predecessor and number to right
                       is successor.

                    Predecessor is 1 less than the number and successor is 1 greater than the
                       number.

                            Ex- Successor  and  predecessor of -5 will be -4 and -6 respectively.
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