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    E:\Working\Orange_Education\Math_Genius_2\Open_Files\Chap_03
                   \ 26-Sep-2025  Bharat Arora   Proof-10                                   Reader’s Sign _______________________ Date __________

                                    4.  Puja and Sony like to collect stamps. Puja has 56                         t    O

                                         stamps and Sony has 48 stamps. Who has more

                                         stamps and by how many?                                              –
                                         Answer: ________________________

                                                                                        t    O
                  5.  A box contains 45 DVDs. Out of them, 12 are

                       music DVDs. How many are non-music DVDs?
                       Answer: __________________                                   –

                                6.  Vinod bought 75 balloons for his birthday celebration.                        t    O

                                     66 of them are used. How many balloons are left
                                     unused?                                                                  –

                                     Answer: ________________________

                         Mental Maths                                                                            Critical Thinking
                    Solve mentally and write the answers in the given blanks.

                    1.  What will you get if you subtract the largest 1-digit number from the smallest 2-digit
                        number? ____________
                    2.  What should be subtracted from 94 to get 0? ____________

                    3.  Tina had 2 dozen bananas. She distributed 20 bananas. How many bananas are left
                        with her? [Hint: 1 dozen = 12 pieces] ____________

                    4.  Subtract the  smallest 2-digit  odd number  from  the  greatest 2-digit  even number.
                        ____________

                    5.  What is the difference of the place value and face value of the digit 7 in the number
                        79? ____________

                         Challenge Question                                                                      Critical Thinking

                      1.  Write two different subtraction sentences, each having a result of 67.
                      2.      + 3 = 10;     +     = 18;   –   =      .   = ?
                      3.  Riya has a secret number. She adds 48, then subtracts 29, and ends up with 75. What

                           was Riya’s secret number?

                  64                                                                                    Mathematics-2

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