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E:\Working\Brother_Education\Preparatory_Stage_Maths-3_(11-09-2024)\Open_Files\CHAP_10
             \ 06-Jan-2024               Sonia Suyal   Proof-1                            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     9 10      3        5 × 9 = 45 minutes  9  Left  Right 3  5 × 3 = 15 minutes
                hand                hand          8       4                            8 half  half 4
                                                    7  6  5          5 × 8 = 40 minutes  7  6  5    5 × 4 = 20 minutes
                       24-Hour Clock         Quarter to the Hour       5 × 7 = 35 minutes        5 × 5 = 25 minutes
                                             4:45 or quarter to 5                   5 × 6 = 30 minutes
                            2400 hours
                             or
                         2300 hours  0000 hours 0100 hours  12
                       2200 hours  11  12 1  0200 hours  11  1       When the minute hand       When the minute hand
                      2100 hours  10 midnight  2  0300 hours
                         9      3                          2
                     2000 hours  8  4  0400 hours  10                 is in the left half, the   is in the right half, the
                    1900 hours  7  5  0500 hours  9         3
                    1800 hours  6  p.m.  a.m.  6  0600 hours           time is read as to.        time is read as past.
                    1700 hours  5  7  0700 hours   8       4
                        4        8
                     1600 hours  3  9  0800 hours    7  6  5
                      1500 hours  2  1  noon  10  0900 hours
                       1400 hours  12  11  1000 hours
                         1300 hours  1100 hours
                            1200 hours
                                       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.                                11  12  1
                      7 a.m.       5 a.m.         7 p.m.        5 p.m.                                  10      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
                                Conversion                                           1   2   3  4
                                                                           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
                                                                                            24
                                                                                                25
                                                                                     22
                                                                          19
                                                                              20
                                                                                 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                                                                                         187
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