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E:\Working\Focus_Learning\Math_Genius_2_(09-10-2023)\Open_Files\Chap_10
               \ 16-Feb-2024  Bharat Arora   Proof-6                                    Reader’s Sign _______________________ Date __________





              CloCk                                                Rohan, do you know            To read the time
                                                                     how to read the           correctly, you must
              Rohan’s mother is buying a beautiful                 time on the clock?         know about the clock.

              wall clock for her house.

              A clock tells us the time. It has two

              hands— a longer hand and a shorter

              hand. The longer hand is called the

              minute hand and the shorter hand is

              called the hour hand. The face of the

              clock is called its dial. The dial of the                                  I have learnt
                                                                                        reading time in
              clock is divided into 12 equal divisions,                              complete hours only.
              marked with numbers 1 to 12 on it.

              Reading Time when Minute Hand is at 12


              In the first clock shown here, the hour hand is at 5                        11  12  1         11  12  1
              and the minute hand is at 12. We say that the time is                     9 10     2 3      9 10     2 3

              5 o’clock or 5:00.                                                        8  7  6  5  4     8  7  6  5  4

              We know that the hour hand takes one hour to move

              from one number to the next. If it has gone from 5 to
              6, it means one hour has passed.

              In one hour, the minute hand when completes one round around the dial, the hour

              hand moves from 5 to 6. Thus, the times is 6 o’clock or 6:00.

              Understanding Time of Morning or Evening

              Rohan usually has breakfast around 7 o’clock                                    We use

              in the morning. And he does self study about 7                    10 11  12  1  2  a.m.  –  From midnight
                                                                                                    to noon
              o’clock in the evening. How will we understand                   9         3    p.m.  –  From noon to
                                                                                8       4           midnight
              here that the clock is showing the time in the                      7  6  5

              morning or evening?

              To overcome this confusion, we use a.m. (Ante

              meridiem) and p.m. (Post meridiem).
              Thus, Rohan’s breakfast time is 7:00 a.m. and his self study time is 7:00 p.m.





              Mathematics-2                                                                                         171
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