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    E:\Working\Focus_Learning\Math_Genius_3_(11-09-2024)\Open_Files\CHAP_10
                 \ 11-Sep-2024               Surender Prajapati   Proof-5                     Reader’s Sign _______________________ Date __________

                          Encapsulate
                      math
                                                                     tiMe

                               Clock                 reading time              reading time to 5 Minutes Correctness

                                      Second     Quarter Past the Hour                  5 × 12 = 60 minutes
                             11  12  1  hand     1:15 or quarter past 1.  5 × 11 = 55 minutes        5 × 1 = 5 minutes
                           10      2                                                           12
                           9        3                  11  12  1  2    5 × 10 = 50 minutes  10 11  1  2  5 × 2 = 10 minutes
                    Hour   8  7  6  5  4  Minute     10        3        5 × 9 = 45 minutes  9  Left  Right  3  5 × 3 = 15 minutes
                                                     9
                    hand                hand          8       4                            8 half  half 4
                                                        7  6  5         5 × 8 = 40 minutes   7  6  5    5 × 4 = 20 minutes
                                                 Quarter to the Hour       5 × 7 = 35 minutes        5 × 5 = 25 minutes
                                                 4:45 or quarter to 5                   5 × 6 = 30 minutes
                                                           12
                                                        11   1           When the minute hand       When the minute hand
                                                      10       2          is in the left half, the   is in the right half, the
                                                      9         3          time is read as to.        time is read as past.
                                                       8       4
                                                         7  6  5

                                           a.M. and P.M.                          estimating the time     Between times
                                                                                                         (before and after)

                                   Noon  Midnight               Midnight  Noon                              10 11  12  1  2

                         11 a.m.       1 a.m.         11 p.m.       1 p.m.                                 9 8      4 3
                      10 a.m.  11  12  1  2 a.m.   10 p.m.   11  12  1  2 p.m.   In seconds  In minutes       7  6  5
                             10         2                  10        2                                     1 hour before
                      9 a.m.  9         3   3 a.m.  9 p.m.  9        3   3 p.m.              In hours
                              8         4                  8         4
                       8 a.m.   7  6  5   4 a.m.    8 p.m.   7  6  5   4 p.m.                                   12
                          7 a.m.       5 a.m.         7 p.m.        5 p.m.                                  10 11  1  2
                                   6 a.m.                  6 p.m.                                          9         3
                                                                                                            8       4
                                                                                                              7  6  5
                                          Writing dates                               Calendar
                                                                                                            1 hour after
                                                                              A calendar is a chart which
                    Example: 15th August, 1947 shall be written in the short form as:  shows days, dates, weeks   11  12  1
                      15    .  08    .   1947       15    /  08    /   1947   and months in a year.         10      2
                                                or                                                         9         3
                       Day   Month      Year        Day     Month     Year         January 2025             8  7  6  5  4
                                                                              Su  M   t  W   th  F  Sa
                                                                                         1   2   3  4
                                    Conversion
                                                                               5  6   7  8   9  10  11       timeline
                     1 hour  = 60 minutes  1 week  = 7 days                   12  13  14  15  16  17  18  A timeline shows
                                                                                             23
                                                                                                    25
                                                                                                24
                                                                                  20
                                                                              19
                                                                                         22
                                                                                     21
                     1 minute = 60 seconds  1 month  = 30 day                 26  27  28  29  30  31     the order or
                     1 day   = 24 hours   1 year   = 12 month                                            sequence in which
                                          1 year   = 365 days                                            some events
                                                                                                         happened.
                  Mathematics-3                                                                                         191

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