Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 34 - Math_Genius_V1.0_C3_Flipbook
P. 34

    E:\Working\Focus_Learning\Math_Genius_3_(11-09-2024)\Open_Files\CHAP_02
                 \ 12-Sep-2024               Surender Prajapati   Proof-4                     Reader’s Sign _______________________ Date __________

                  Step 3: Add the hundreds.                                                                   H   t    O

                            6 + 3 = 9 hundreds                                                                    1
                            Write 9 in the hundreds column.                                                   6   2    9

                            Thus, 629 + 353 = 982.                                                        + 3     5    3
                                                                                                              9
                                                                                                                  8
                                                                                                                       2
                  example 1: Add 324 and 256.

                  Solution:   Write the numbers in place value columns and add using the following steps:

                  Step 1: Add the ones.

                            4 + 6 = 10 ones                                     H   t    O
                            Regroup 10 ones as 1 ten 0 ones.                         1
                                                                                3
                            Write 0 in the ones column and carry            + 2     2    4
                                                                                         6
                                                                                    5
                            over 1 to the tens column.
                                                                                         0

                  Step 2: Add the tens
                            1 (carried over) + 2 + 5 = 8 tens                   H   t    O

                            Write 8 in the tens column.                              1
                                                                                3   2    4
                                                                            + 2     5    6
                                                                                    8    0

                  Step 3: Add the hundreds

                            3 + 2 = 5 hundreds                                  H   t    O
                            Write 5 in the hundreds column.                          1

                            Thus, 324 + 256 = 580                               3   2    4
                                                                            + 2     5    6
                                                                                5   8    0

                  Addition of 3-digit numbers by regrouping tens

                  When we have more than 9 tens, say 12 tens, we can regroup 12 tens into 1 hundred
                  and 2 tens.

                                                        12 tens            1 hundred 2 tens

                  32                                                                                    Mathematics-3

| 29 30 31 32 33 34 35 36 37 38 39 |