Page 71 - ICSE Math 2
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(b)  Subtract 68 from 95.

                                 T      O
                                                    Step 1:   Subtract the ones.
                                 9      5
                                                               8 being bigger than 5 cannot be subtracted

                            –    6      8                      from 5.







                                 T      O
                                 8      15          Step 2:   Take 1 ten from the tens column and add it
                                 9      5
                                                               to 5 ones.
                            –     6     8                      10 ones + 5 ones = 15 ones = 15

                                        7                      Subtract 8 from 15.
                                                               15 – 8 = 7

                                                                 Change 9 tens to 8 tens in the tens column.

                                 T      O
                                 8      15          Step 3:   Subtract the remaining tens.
                                 9      5
                                                               8 – 6 = 2
                            –    6      8
                                                               So, 95 – 68 = 27.

                                 2      7



                      5.  Subtract the given numbers.


                                       T     O                         T      O                         T     O
                           (a)                             (b)                              (c)
                                       8     2                         9      5                        7      6

                                 –     6     7                   –     6      8                   –    4      9








                                       T     O                         T      O                         T     O
                           (d)                             (e)                              (f)
                                       8     2                         9      3                        4      0


                                 –     5     3                   –     1      9                   –    2      5






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