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                   \ 26-Sep-2025  Bharat Arora   Proof-10                                   Reader’s Sign _______________________ Date __________

                  Step 2.  Subtract the tens.                        t    O

                  4 tens are left.                                   4    12      Subtract the ones first,
                                                                                  then subtract the tens.
                  So, 4 – 3 = 1 ten                                  5    2

                  Write 1 in the tens column.                    –   3    6
                                                                     1    6
                  Thus, 52 – 36 = 16.
                                                                                          Think Tank               Critical Thinking
                  example 2: Find: (a) 82 – 48                (b)  71 – 59
                                                                                        1.  What is 3 tens less
                  Solution: (a)         t    O                (b)       t   O              than 70 ones?

                                        7    12                         6   11          2.  What is the number just
                                                                                           after 95 – 52?
                                        8    2                          7    1
                                    –   4    8                      –   5    9                     Math Insight

                                        3    4                          1    2               In subtraction, we always
                                                                                             write  the greater number
                             Thus, 82 – 48 = 34.                   Thus, 71 – 59 = 12. on top and  the smaller
                                                                                             number below it.
                           Practice Time 3C

                  1.  Find the difference.

                        (a)      t    O          (b)      t    O         (c)       t    O         (d)       t    O

                                 4    5                   3    0                   2    7                   4    0
                             –        8               –        4               –        9               –        5

                  2.  Subtract the following.

                        (a)      t    O          (b)      t    O         (c)       t    O         (d)       t    O

                                 6    0                   6    1                   4    0                   9    0
                             –   2    5               –   4    4               –   1    8               –   2    1

                        (e)      t    O          (f)      t    O         (g)       t    O         (h)       t    O

                                 2    5                   5    1                   5    2                   7    2

                             –   1    6               –   1    7               –   2    8               –   2    4

                  58                                                                                    Mathematics-2

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