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    E:\Working\Focus_Learning\Math_Genius_1_(05-10-2023)\Open_Files\04_Chap_4\Chap_4
                   \ 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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