Page 12 - 2024 prim 4 SUMMERY_Neat
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Delta Modern Language Schools


              Primary stage
              Maths Department
                            
              Prim 4           2024-2025

                     Convert Metric mass units




                                      ➢  1 kilogram = 1000 grams     (1 kg= 1000 gm )

                                      ➢  1 ton = 1000 kilogram


                                           apacity units
                    Convert Metric c
                                     units


                                      ➢  1 liter = 1000 millilitre        ( 1 L = 1000 ml )


                      Conver Metric time units



                                      ➢  1 week = 7 day

                                      ➢  1 day = 24 hours ( hr)
                                      ➢  1 hour = 60 minutes ( min)

                                      ➢  1 minute = 60 seconds (sec)

              Remark :


                 Elapsed time is the time that passes from the start to the end of an
                 activity


              There are different ways to calculate the elapsed time : (add times)

                Hours    :    minutes

               3            :    40
          +                  :    30
              4             :    10      ( Rename 70 minutes  as 1 hour , 10 minutes)

              2) subtract time

              Hours : minutes

                    + 60
             6                  80
                 7      :   20

                2       :    40

                4       :    40


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