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    D:\Working\TouchPad_Maths\TouchPad_Maths_1\Open_Files\Chap_07\Chap_07
                   \ 17-Nov-2025     Surender Singh Rothan   Proof-7                           Reader’s Sign _______________________ Date __________

                    2.   Add and subtract to match the correct answer. One has been done for you.

                                8 + 7                               12                             15 – 3

                                9 + 9                               15                              18 – 1

                               10 + 2                               14                              17 – 2

                                16 + 1                              17                             18 – 0

                                11 + 3                              18                             16 – 2

                  SuBtrACtion in tEnS

                  Example 1. Subtract 20 from 30.

                  Solution.

                                                                                                                 T O

                                                                                                                 3 0
                                                 -                                  =                       – 2 0

                                                                                                                 1 0

                           3 tens                -       2 tens                     =       1 ten

                           30                    -       20                         =       10

                  Example 2. Find 40 - 10.

                  Solution.

                                                                                                                 T O

                                                                                                                 4 0

                                             -                              =                               – 1 0

                                                                                                                 3 0

                           4 tens            -        1 ten                 =        3 tens
                           40                -        10                    =        30

                       114       Mathematics 1

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