Page 80 - New Medley 1 Semester 2
P. 80

Abacus Time



               Show Numeral on the Abacus

               An abacus is a counting tool. A two pin abacus can be used to show
               numeral  of  a  two  digit  number.  The  pin  on  the  left  is  for  tens  and

               that on the right is for ones.

               Suppose we wish to show 56 on the abacus.                                                   T       O

                                               56 =  5  tens +  6  ones.


               This can be shown by 5 beads on T and 6 beads on O.



                A.  Draw the beads to show the numeral.

                     1. 42                    2.  63                  3.  21                  4.  18









                            T    O                    T    O                  T    O                  T    O

                     5. 49                    6.  12                  7.  76                  8.  98








                            T    O                    T    O                  T    O                  T    O


                     9. 36                   10.  82                 11.  24                 12.  69








                            T    O                    T    O                  T    O                  T    O


                    13. 47                   14.  78                 15.  55                 16.  84








                            T    O                    T    O                  T    O                  T    O


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