Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 148 - MathGPT_V1.0_C3
P. 148

    E:\Working\Brother_Education\Preparatory_Stage_Maths-3_(11-09-2024)\Open_Files\CHAP_09
                 \ 11-Sep-2024                      Sonia Suyal   Proof-1                     Reader’s Sign _______________________ Date __________

                  units of Measuring Mass (Weight)

                  We use standard units such as milligram, gram and kilogram to weigh objects.

                              Milligram                          Gram                             Kilogram

                                                                                    •
                                                      •
                      •  It is used to measure very    It is used to measure    It is used to measure heavy
                        light things.                     the weight of lighter          weights. It is the standard unit
                      •  It is denoted by 'mg'.           objects.                       of weight.

                   Examples: Weight of a                 •  It is denoted by 'g'.      •  It is denoted by ‘kg’.
                   feather, a safety pin, a           Examples: Weight of a         Examples:  Weight of a boy, a
                   medicine.                          book, a packet of chips.      basket full with apples.

                  Conversion

                  Kilogram into gram

                  To convert kilograms into grams, we multiply the number of kilograms                         Note
                  by 1000.                                                                                 1 kg = 1000 g

                  Example 1: Convert the following into g.                                                 1 g  = 1000 mg.

                               (a) 9 kg        (b) 4 kg
                  Solution:  (a) 9 kg = (9 × 1000) g = 9000 g               (b) 4 kg = (4 × 1000) g = 4000 g

                  gram into Kilogram                                    Knowledge Desk

                                                                     we use different standards of measuring weights.
                  To convert grams into Kilograms, we                Metric system             Indian system
                  divide the number of grams by 1000.                11 g 664 mg (approx.)     1 tola
                                                                     933 g 10 mg (approx.)     1 ser (80 tola)
                  Example 2: Convert 8000 g into kg.                 37 kg  324 g (approx.)    1 maund (40 ser) or mann

                  Solution:  8000 g = (8000  ÷ 1000) kg

                                   = 8 kg                                      1000 8000      8 kg

                                 Thus, 8000 g = 8 kg.                                 8000
                                                                                           0 g

                   teacher’s
                      tip      Ask the students about the use of different units of mass  with the help of examples related to their daily life.

                 146                                                                                    Mathematics-3

| 143 144 145 146 147 148 149 150 151 152 153 |