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    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 __________

                  Example 3: Add 35 kg 780 g, 64 kg 85 g and 9 kg 8 g.

                  Solution:   Arrange the given measures in the two columns of ‘kg’ and ‘g’ correctly. Now,
                                 add as ordinary numbers.
                                 Step 1: Add grams.                                                  kg             g

                                           780 g + 85 g + 8 g = 873 g                                1          1   1

                                           Write 873 under the g column.                             3 5        7 8 0
                                 Step 2: Add kilograms.                                              6 4        0 8 5

                                           35 kg + 64 kg + 9 kg = 108 kg                      +          9      0 0 8

                                           Write 108 under the kg column.                        1 0 8          8 7 3
                                 Thus, 35 kg 780 g + 64 kg 85 g + 9 kg 8 g = 108 kg 873 g

                           Think and Answer
                         A space  suit that  astronauts wear in space  has  helmet,  hand
                         gloves, jacket, socks, etc. The weight of each component is given
                         in the picture alongside.

                          1.  What is the weight of a space suit without an oxygen cylinder?
                              ______________________
                          2.  What is the weight of a space suit with an oxygen cylinder?
                              ______________________

                          Knowledge Desk
                                                                 1
                        The weight on the Moon of an object is  th the weight of the object on the Earth.
                                                                 6

                  addition of CaPaCity

                  If the units in the numbers to be added are the same, then simply add the numbers and

                  write the unit.

                  Example 1: Find:  (a) 56 L + 12 L.         (b) 735 mL + 605 mL.
                  Solution:     (a)      5 6 L              (b)             1

                                      + 1 2 L                           7 3 5 mL
                                         6 8 L                   +      6 0 5 mL

                                                                     1 3 4 0 mL          = 1000 mL + 340 mL

                                 Thus, 56 L + 12 L = 68 L            Thus, 735 mL + 605 mL = 1 L 340 mL

                  When the given capacities are a combination of two units, we arrange them in their
                  respective columns and then add them.

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