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    E:\Working\Orange_Education\TouchPad_Maths_4_(10-11-2025)\Open_Files\Chap_02\Chap_02
                 \ 12-Nov-2025  Bharat Arora   Proof-8                                     Reader’s Sign _______________________ Date __________

                    4.  Subtract the following numbers in column form:
                        a.  9647 from 10456                                 b.  53264 from 87046

                        c.  82070 from 95062                                d.  13295 from 67326
                  5.  There are 35983  men, 22847 women and 6085  children in an area. What  is the
                        population of that area?

                  6.  In a certain year, three sugar factories produced 39847; 23078 and 12607 bags of sugar
                        respectively. How many bags of sugar were produced by these factories together?

                    7.  In  an election,  there were four candidates.  They received  38457;  25967;  9638  and
                        875 votes respectively. If 3257 votes were found invalid, how many votes in all were
                        counted?
                  8.  The cost of a washing machine is `28,975, and the cost of a computer is `7,672 more
                        than the cost of the washing machine. What is the cost of the computer? What is the

                        total cost of the washing machine and the computer?
                  9.  What number should be added to 17855 to get 40099?

                  10.  What number should be subtracted from 42060 to get 7699?
                  11.  The sum of two numbers is 90613. If  one of the numbers is 58734, find the other
                        number.

                  12.  A milk dairy produced 80500 litres of milk in a day. It supplied 38780 litres to one
                        town and 18697 litres to another town. How much milk was left with the dairy on that
                        day?

                                                                                              Mental Maths

                Choose the correct option.                                                     21 st
                                                                                             Century   #Computational Thinking
                                                                                              Skills
                   1.  5000 + 8 + 18 = ?
                        a.  5036                 b.  5016                 c.  5026                 d.  5046

                    2.  6567 + 9845 + 372 = ?
                        a.  17784                b.  16784                c.  15784                d.  16794

                    3.  8 ten thousands + 5 thousands + 15 hundreds + 12 tens = ?
                        a.  86620                b.  86520                c.  76520                d.  86720

                    4.  The difference of 8095 and 3002 is:

                        a.  5003                 b.  5093                 c.  4093                 d.  6093
                  5.  Radhika's monthly income is `59,089 and Mohan's monthly income is `75,830. What

                        is the difference of their monthly incomes?
                        a.  `11,985              b.  `16,741              c.  `83,259              d.  `23,279

                       40        Mathematics 4

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