Page 57 - ICSE Math 1
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(b)  6 – 5 = ?










                      0          1         2         3          4         5          6         7         8          9
                                                                                       You Should Know
                          Star  ng from 6, we count                                When we subtract a given
                           back 5. We get the answer 1.                            number from a number

                                                                                   that comes just after it, the
                           So, 6 – 5 = 1.
                                                                                   answer is always 1.



                      7.  Subtract the given numbers on the number line.




                           (a)  8 – 4 =

                                                     0     1     2    3     4     5    6      7     8     9




                           (b)  7 – 5 =
                                                    0     1     2    3     4     5    6      7     8     9





                           (c)  9 – 2 =
                                                    0     1     2    3     4     5    6      7     8     9





                           (d)  5 – 1 =
                                                    0     1     2    3     4     5    6      7     8     9



                                                               Brainwork
                          Subtract on the number line.




                           7 – 2 – 3 =
                                                   0     1      2     3      4     5      6     7      8      9


                          Hint: Start from the fi rst number and move backward to subtract the second
                          number. Then starting from the answer, count backward the third number.



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