Page 17 - Maths Skill - 3
P. 17

4-digit Numbers                                                                                         15



                                                   Exercise 2.1



          1. Fill in the missing numbers.
                (a)     1000                           1003


                (b)    2567                                       2571

                (c)    7540                                                 7545

               (d)                                     8838                            8841



          2. Write the numbers for the following number names.                    Th      H       T     O

                (a)  Nine thousand nine hundred forty-two

                (b)  Two thousand twenty-two
                (c)  Five thousand six hundred fifty-four

               (d)  Seven thousand two hundred ninety-nine

          3. Write the number names for the following numbers.

                (a)  7214  _____________________________________________________________

                (b)  3615  _____________________________________________________________
                (c)  8006  _____________________________________________________________

               (d)  5555  _____________________________________________________________


        Numbers on the Abacus
        We can represent the numbers on an abacus. To represent 4-digit number we use four rods
        on the abacus. Each rod represents a different value. From the right, first rod represents

        the ones place, second rod represents the tens place, third rod represents the hundreds
        place, and the last rod represents the thousands place.


              Let’s Attempt


        Example 1:  Represent the number 6542 on the abacus.

        Solution:          Put 2 beads in the ones column, 4 beads in the
                         tens column, 5 beads in the hundreds column
                         and 6 beads in the thousands column.                              Th     H      T     O

                           This abacus represents the number 6542.                          6      5     4      2
   12   13   14   15   16   17   18   19   20   21   22