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               \ 11-Sep-2024  Bharat Arora   Proof-6                                    Reader’s Sign _______________________ Date __________





              2.  Cross (7) out the objects to subtract and find the answer. One has been done
                   for you.


                   (a)                             (b)                               (c)











                             7 – 2 =  5                       6 – 1 =                          4  – 1 =


                   (d)                              (e)                              (f)












                             8 – 4 =                          3 – 2 =                           5 – 3 =



              Subtraction: backward counting


              Kiyara has 15 toys. She gave 9 toys to her brother Kavi.

              Kavi: How many toys are left with you now?

              Kiyara: 6 toys

              Kavi: How?
              Kiyara: I subtracted the  toys  given to you from the total number of toys.

              You can count backwards to subtract. Start from 15 and count back 9 steps as follows:


                                   15     14    13     12     11    10     9      8     7      6

                                       1      2      3     4      5     6      7      8     9

              Similarly, to subtract 5 from 12, we start with the bigger number 12 and count
              backwards 5 steps.
                                                                                                     Note
                                                12     11    10      9     8      7       Subtraction is opposite of
                                                                                          addition.  In addition,  we
                                                    1      2      3     4      5          count forward but in case
                                                                                          of subtraction,  we count
              Thus,       12 – 5 = 7                                                      backward.




              Mathematics-1                                                                                          57
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