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Exercise 8



               1.       t      kg         2.        t       mg       3.         kg        g
                        6      220                  26      370                14        239
          FOR ONLINE READING ONLY
                     − 4       114               − 13       250              − 12        910



               4.       t         kg      5.    kg       dag         6.     kg        g
                        4         54             20       600               16       860

                     − 2         340            − 6       560             −13        900



               7.      t     kg     cg 8.         g      mg          9.      hg       g
                     10     143      64          40      720                 15       85

                   −         337  27           − 15      570                −12      90



               10.   kg     cg mg         11.    t     g    mg       12.     hg      g    cg

                      70  40  60                 6 800       660             4      31 12
                   − 15 12        38           − 3 280       830          − 1       81     4






              Word problems involving measurements of mass

              Word problems in measurements of mass show how the metric
              units are used in real-life situations.


                     Example


                A sack of rice weighs 54 kg while a sack of wheat weighs
                49,000 g.

                 (a)  Which of the two sacks is heavier?

                 (b)  Find the difference in their masses.



                                                   69





                                                                                          06/11/2024   17:17:13
     MATHEMATICS STD 4 PB 2024.indd   69
     MATHEMATICS STD 4 PB 2024.indd   69                                                  06/11/2024   17:17:13
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