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    E:\Working\Focus_Learning\Math_Genius_2_(09-10-2023)\Open_Files\Chap_04
                   \ 17-Nov-2023  Bharat Arora   Proof-6                                    Reader’s Sign _______________________ Date __________

                           practice time 4e

                  1.  Subtract the following.

                          (a)    H    t    O     (b)      H    t    O    (c)       H    t    O    (d)       H    t    O

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

                  2.  Write the numbers in columns and then subtract them.

                       (a) 537 – 105           (b) 753 – 20              (c) 234 – 4             (d) 814 – 14

                                 H    t    O              H    t    O              H    t    O              H    t    O

                             –                        –                        –                        –

                  suBtrAction of 3-digit numBers with regrouping

                  regrouping tens

                  We have learnt how to subtract by regrouping tens into ones for 2-digit numbers.

                  Let us use it for subtracting 3-digit numbers.
                  example 1: Subtract 246 from 793.

                  Solution:  First write the numbers in columns according to the place value and
                                  then subtract.

                  Step 1.  Subtract the ones.                          Step 2.  Subtract the tens.

                             Since, 3 < 6, so regroup.                            8 tens are left.

                               9 tens + 3 ones                                    So, 8 – 4 = 4 tens
                                              = 8 tens + 13 ones                            H    t    O

                             Now, 13 – 6 = 7 ones                                                8   13

                                       H    t    O                                          7    9    3

                                            8    13                                     –   2    4    6
                                       7    9    3                                               4    7
                                   –   2    4    6
                                                 7

                  78                                                                                     Mathematics-2

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