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    E:\Working\Focus_Learning\Math_Genius_3_(11-09-2024)\Open_Files\CHAP_11
                 \ 11-Sep-2024                      Surender Prajapati   Proof-4              Reader’s Sign _______________________ Date __________

                  example 1: Multiply `16.25 by 5.
                                                                                                           3  1     2
                  Solution:   Step 1.  Multiply the given amount by the number ignoring                ` 1 6 . 2 5
                                          the dot (.).                                              ×                   5

                                           1625 × 5 = 8125                                             ` 8 1 . 2 5
                                Step 2. Put a dot in the product after the second digit counting from the right.

                                           8125        81.25
                                Thus, `16.25 × 5 = `81.25

                  example 2: Shweta bought a pen for `5.75. What will be the cost of 6 such pens?
                                                                       4     3
                  Solution:   Cost of 1 pen              =     `       5 . 7 5
                              Number of pens             =  ×                   6

                              Total cost of 6 pens       =     ` 3 4 . 5 0                                `  5.75

                                Thus, the cost of 6 such pens is `34.50.

                  example 3: An envelope in the post office costs `5.50. What is the cost of 8 such
                  envelopes?

                  Solution:                                              4

                                 Cost of 1 envelope        =      `      5 . 5 0
                                 Number of envelopes =        ×                    8

                                 Cost of 8 envelopes       =      ` 4 4 . 0 0

                                Thus, the cost of 8 envelopes is `44.

                  division of Money

                  Division of money is similar to the division of ordinary numbers.

                  Step 1. Divide the given amount by the given number, ignoring dot (.).
                  Step 2. Then, put a dot after the second digit counting from the right in the quotient.

                  example 4: Divide `50.30 by 5.

                  Solution:   Step 1. Divide 5030 by 5.                               Think and Answer
                                          5 5030    1006                          1.  Which Indian currency note bears
                                             5                                       the Swachh Bharat Abhiyan logo
                                             00                                      and has the image of the Red Fort?
                                             00                                   2.  The highest denomination
                                                30                                   currency note of India printed by
                                                30                                   the RBI in the 21st century was
                                                                                     of________.
                                                  0

                  Mathematics-3                                                                                         203

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