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    Looking at this unfair practice, the villagers became annoyed and complained to the
                       king. They demanded that the cloth merchant use a standard measuring tape to ensure

                       everyone received the same, fair length of cloth for their money.
                       Name the instrument/s that is/are:

                          1.  Used to measure the length of a line.                            ___________________
                         2.  Used by shopkeepers to measure cloth.                             ___________________

                         3.  Used by tailors to take measurements.                             ___________________

                         4.  Used in cars and bikes to measure distance.                       ___________________

                                                                                                       21 st   #Subject Enrichment
                                                                                                     Century
                    Units of Length                                                                   skills

                    Centimetre (cm), metre (m) and kilometre (km) are some standard units of length.

                          Millimetre                 Centimetre                    Metre                  Kilometre

                    Millimetre is the       Centimetre is the small        Metre is another        Kilometre is the
                    smaller unit of         unit of length. We             unit of length. We      bigger unit of length.
                    length. We measure  measure smaller lengths  measure longer                    We measure bigger
                    very tiny lengths       like the length of a           lengths like the        lengths like the
                    like the thickness of  crayon, length of a pencil,  length of a cloth and  distance between two
                    a coin, length of an  length of a notebook, etc.,  wall, height of a tree,  cities in kilometres.
                    ant etc. We denote  in centimetres. We denote etc., in metres. We              We denote kilometre
                    millimetre by 'mm'. centimetre by ‘cm’.                denote metre by ‘m’. by ‘km’.

                                                                                            Height of tree

                    Measuring short Lengths

                    We use a scale to measure the length of an object. The scale has two types of marks —
                    long marks and short marks. The  long marks on the scale are 1  cm apart. Each
                    centimetre  is  divided into  10 small equal  parts  called
                    millimetres (mm).                                                                Interesting Facts
                                                                                                The giraffe has the longest
                                                                                                 neck (up to 3 metres) in
                                                                                                  the animal kingdom.

                                                                                                                 153
     Mathematics 3                                                                       Measurement of Length

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