Page 113 - ICSE Math 2
P. 113

We also use clocks to read   me. But we don’t wear them on our wrist. We hang
                    them on walls or keep them on tables and shelves. Watches and clocks come
                    in many designs and shapes. The common shapes are circular or rectangular.


                    Reading and Writing Time


                    We usually read   me in hours and minutes.

                    When the minute hand is at 12, the hour hand tells                               11  12  1
                    us what   me it is.                                                            10          2
                                                                                                  9             3
                    For example, if the minute hand is at 12 and the                               8           4

                    hour hand is at 4, the   me is 4 o’clock.                                         7  6  5
                    We can write it in two ways.


                                   4:00          or    4  o’clock

                              hours : minutes                        hours


                    The hour hand goes round the clock in 12                              You Should Know
                    hours. A day has 24 hours in it. So, the hour                          When the minute
                                                                                       hand is at 12, it means 00
                    hand has to take two rounds of the clock in
                                                                                                minutes.
                    one day. A day is divided into four parts.

                     •  The   me when the sun rises is morning.


                     •  The sun sets in the evening.

                     •  Noon is the   me when the sun is directly over our head. The   me between
                          noon and evening is called a  ernoon.

                     •  The   me between evening and morning is called night.


                      1.  Fill in the remaining numbers
                           in the clock. Draw the hour

                           hand at any number. Write                                               12
                           the   me in the boxes.



                                                                                         9                    3



                                       :      or            o’clock
                                                                                                    6





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