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    E:\Working\Focus_Learning\Math_Genius_1_(05-10-2023)\Open_Files\03_Chap_3\Chap_3
                   \ 11-Sep-2024  Bharat Arora   Proof-6                                    Reader’s Sign _______________________ Date __________

                           Practice time 3F

                  1.  Add the following. One has been done for you.

                       (a)                    6  +  3  +  2  = 11   (b)                            +      +       =

                       (c)                        +      +      =       (d)                        +      +       =

                       (e)                        +      +      =       (f)                        +      +       =

                       (g)                        +      +      =       (h)                        +      +       =

                  2.  Add.

                       (a)          1    (b)            3    (c)            4    (d)            7    (e)           3

                                    6                   4                   2                   1                  8

                            +       3           +       7           +       5          +        8          +       2

                  Adding 2-digit And 1-digit numbers

                  There were 12 pencils in a drawer. Hazel placed 7 more pencils in the drawer. How

                  many pencils are there in total?

                  12 is a 2-digit number and 7 is a 1-digit number.

                  To add numbers 12 and 7, we follow these steps.
                      Step 1.  Write the numbers one below  Step 2.                  Add the tens.

                                 the other.                                             tens Ones

                                 First add the ones.                                      1      2

                                   tens Ones                                          +          7

                                     1      2                                             1      9
                                 +          7
                                            9

                                                                                        There is no tens digit in the
                                                                                      second number.

                                 2 ones + 7 ones = 9 ones                             So, write 1 in the tens place.

                                 Write 9 in the ones place.            Thus, 12 + 7 = 19

                  Mathematics-1                                                                                          47

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