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    D:\Working\TouchPad_Maths\TouchPad_Maths_1\Open_Files\Chap_04\Chap_04
                   \ 17-Nov-2025     Surender Singh Rothan   Proof-7                           Reader’s Sign _______________________ Date __________

                           e.                          10 – 2 =            f.                          10 – 8 =

                           g.                          10 – 3 =            h.                          10 – 9 =

                           i.                          10 – 4 =            j.                         10 – 10 =

                           k.                         10 – 5 =

                      2.  Subtract and colour the balloons as per the given colour code.

                           1           2            3            4            5

                                        4 – 2           7 – 2          9 – 8            5 – 2            8 – 4

                                        =              =               =                =                =

                                        8 – 5           9 – 5           10 – 9           6 – 4            6 – 1
                                        =               =               =                =               =

                    VertiCAl SubtrACtion

                    Numbers  can be  subtracted  by  writing  them  one  below  the  other.  This
                    method of subtraction is called vertical subtraction. In vertical subtraction,

                    we write the bigger number on top and the smaller number below.
                    Let us subtract 4 from 9.

                    Since 9 > 4, we write the numbers
                    like this:

                                           T O                            Draw the lines equal to
                                                                           bigger number. Cross
                                                9                        the lines equal to smaller

                                       –        4                           number. Count the
                                                                        uncrossed number of lines
                                                5                         which gives the answer.

                    Thus, 9 – 4 = 5.

                                                                                                                  59
                                                                                           Subtraction up to 20

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