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    E:\Working\Focus_Learning\Math_Genius_3_(11-09-2024)\Open_Files\CHAP_03
                 \ 12-Sep-2024  Surender Prajapati   Proof-5                                  Reader’s Sign _______________________ Date __________

                           Practice Time 3A

                  1.  Subtract the following.

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

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

                       (e)    H   t   O         (f)    H   t   O         (g)    H   t   O        (h)    H    t   O

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

                  2.  Find the difference by arranging the numbers in columns.

                       (a)  628 – 436           (b)  843 – 257           (c)  619 – 381          (d)  830 – 538

                       (e)  609 – 528           (f )  576 – 348          (g)  930 – 648          (h)  400 – 178

                  Subtraction of 4-digit numberS

                  We have learned the subtraction of 3-digit numbers without and with regrouping. The
                  same method is applied when we subtract 4-digit numbers without and with regrouping.

                  Subtraction without Regrouping

                  Example 1: Subtract 6578 from 9999.

                  Solution:   Write the numbers in columns and follow the given steps:                         th H t O
                                                                                                               9 9 9 9
                                 Step 1: Subtract the ones. 9 ones – 8 ones = 1 one                         – 6 5 7 8
                                 Step 2: Subtract the tens. 9 tens – 7 tens = 2 tens                           3 4 2 1

                                 Step 3: Subtract the hundreds. 9 hundreds – 5 hundreds = 4 hundreds

                                 Step 4: Subtract the thousands. 9 thousands – 6 thousands = 3 thousands

                                 Thus, 9999 – 6578 = 3421
                  Subtraction with Regrouping

                  Titu and Sonu live in Bhopal. They are planning to go on a long vacation with their parents.

                  Titu: We plan to go to Jammu by car or flight.

                  Sonu: I prefer car. However, what is the difference between distances travelled by car or flight?

                  54                                                                                    Mathematics-3

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