Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 111 - Touchpad Mathematics V1.0 C1
P. 111

    D:\Working\TouchPad_Maths\TouchPad_Maths_1\Open_Files\Chap_07\Chap_07
                   \ 17-Nov-2025     Surender Singh Rothan   Proof-7                           Reader’s Sign _______________________ Date __________

                  Example 2. Add 30 and 10.
                  Solution.

                                                                                                                T O
                                              +                =                                                3 0

                                                                                                            +    1 0

                            3 tens            +      1 ten     =                  4 tens                        4 0

                  Thus, 30 + 10 = 40.

                              Exercise 7B

                  Add vertically.

                      1.       T O        2.        T O       3.        T O        4.        T O       5.         T O

                               3 0                  3 0                 7 0                  4 0                  3 0

                           +   2 0             +    3 0             +   1 0             +    2 0             +    4 0

                      6.       T O        7.        T O       8.        T O        9.        T O       10.        T O

                               2 0                  5 0                 6 0                  7 0                  2 0

                           +   4 0             +    3 0             +   1 0             +    2 0             +   6 0

                  AddinG 2-diGit nuMBErS

                  using Expanded Form

                  Example 1. Add 73 and 26.
                                                                          T O
                  Solution. Write the given

                  numbers in expanded form                                7 3                   7 tens and 3 ones
                  and then add.                                       + 2 6                   + 2 tens and 6 ones

                  Thus, 73 + 26 = 99.                                     9 9                  9 tens and 9 ones

                                                                                                                 109
                                                                                Addition and Subtraction up to 100

| 106 107 108 109 110 111 112 113 114 115 116 |