Page 75 - Maths Class 02
P. 75

Example :          Subtract 345 from 832.




                       H  T  O
                                          Step 1 :  Arrange  the  numbers
                       8   3   2
                                                        in their places.
                     – 3   4   5





                                 Step 2 :  At ones place, 2 < 5. So, borrow 1

                                                ten from tens place and add to 2,

                                                then subtract 5.                                         H  T   O
                                                                                                               2   12
                                                (1 ten + 2 ones) – 5 ones                                 8   3   2


                                                (10 + 2) – 5                                           – 3   4   5

                                                12 – 5 = 7                                                         7

                                                We write 7 in ones place.




                                 Step 3 :  At tens place the digit remains 2. 4 cannot be

                                                subtracted from 2. So, borrow 1 hundred from

                H  T   O                        hundreds place and add to 2, then subtract 4.
                 7    12  12
                 8   3   2                      (1 hundred + 2 tens) – 4 tens


               – 3   4   5                      (10 tens + 2 tens) – 4 tens

                      8    7                    12 tens – 4 tens = 8 tens

                                                We write 8 at tens place.







                                                                                                         H  T   O
            Step 4 :  At  hundreds  place,  the  digit  remains  7.
                                                                                                          7   12   12
                          Subtract  3  from  it  and  write  at  hundreds                                 8   3   2

                          place.                                                                       – 3   4   5

            Therefore, 832 – 345 = 487                                                                    4    8   7





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