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    E:\Working\Orange_Education\TouchPad_Maths_4\Open_Files\Chap_11\Chap_11
                 \ 10-Nov-2025  Bharat Arora   Proof-8                                     Reader’s Sign _______________________ Date __________

                    4.  Add.

                        a.  8 h 15 min, 16 h 43 min                         b.  15 min 39 s, 18 min 24 s, 9 min 13 s
                        c.  18 h 42 min, 19 h 32 min                        d.  16 h 8 min 21 s, 12 h 12 min 12 s

                  5.  Subtract.

                        a.  6 h 28 min from 9 h 17 min                      b.  21 min 19 s from 40 min
                        c.  24 s from 1 min                                 d.  58 min from 1 hour

                  6.  Solve the following:
                        a.  Geeta went for a movie at 6:15 p.m. and returned 3 h 15 min later. At what time

                            did she return?
                        b.  Jaspreet takes 25 minutes to have her breakfast, 30 minutes to have her lunch
                            and 24 minutes to have her dinner. What is the total time she spends on eating?

                        c.  Anita plays for 1 hour 40 minutes daily. Today she went to play at 3:50 p.m. At
                            what time should she return?
                        d.  Rohan’s family went on a trip on 17th May 2025 and returned on 12th July 2025.

                            How many days did they spend on the trip?

                                                                                              Mental Maths

                                                                                                    21 st
                                                                                                   Century   #Critical Thinking
                                                                                                    Skills
                Choose the correct option.
                    1.  8 hours 50 minutes = _______________ minutes.

                        a.  470                  b.  500                  c.  530                  d.  600

                  2.  How many seconds are there in 1 hour?
                        a.  60                   b.  360                  c.  1800                 d.  3600

                  3.  Which of the following gives the number of minutes in a day?

                        a.  24                   b.  24 × 60              c.  60 × 60              d.  24 × 60 × 60

                  4.  The _______________ hand moves the fastest in a clock.

                        a.  hour                 b.  minute               c.  second               d.  None of these
                  5.  8 days 8 hours = _______________ hours.

                        a.  200                  b.  224                  c.  250                  d.  300

                  6.  What time was it 3 hours 30 minutes before 12 noon?

                        a.  8:30 am              b.  8:40 am              c.  9:30 am              d.  9:30 pm

                       196       Mathematics 4

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