Page 21 - Maths Class 03
P. 21

Carry On



              Read the following statements aloud.

              1.     An eight years old child has lived for about 2920 days.

              2.     Mt. Everest is 8848 m high.

              3.     A year has about 8760 hours.

              4.     There are about 1652 languages in India.


            Expanded Form of Numbers


            In expanded form of a number, the number is shown according to the place

            values of its digits.

            In 2385, the place value of the digits given below :

                                         Th      H        T      O

                                          2       3       8      5
                                                                                 5 × 1 = 5


                                                                                 8 × 10 = 80

                                                                                 3 × 100 = 300


                                                                                 2 × 1000 = 2000

            Hence, 2385 = 2000 + 300 + 80 + 5

            Thus, 2000 + 300 + 80 + 5 is the expanded form of 2385.

            Example  :           Write the following numerals in expanded form.

                                         a.     2569          b.     6056           c.     7625           d.    2048

            Solution  :          a.      The expanded form of 2569 is :

                                         2000 + 500 + 60 + 9

                                 b.      The expanded form of 6056 is :

                                         6000 + 50 + 6

                                 c.      The expanded form of 7625 is :

                                         7000 + 600 + 20 + 5

                                 d.      The expanded form of 2048 is :


                                         2000 + 40 + 8


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