Page 103 - SK Year 5 Mathematics DLP
P. 103

MULTIPLICATION OF MONEY



                   1             In a year, we have                    Calculate the amount of
                                 sold 20 motorcycles                   sales for 20 motorcycles.
                                       like this.
                                                                       20 × RM42 970 =




                                                                         Method 1
                                      RM42 970

                                                                                    1 1
                                                                              RM 4 2 9 7 0
                                                                           ×               2 0
                                                                              RM 8 5 9 4 0 0


                  Method 2
                              20 × RM42 970  = (10 × 2) × RM42 970             20 = 10 × 2
                                                =     10 × RM42 970 × 2

                                                = RM429 700 × 2
                                                = RM859 400

                              20 × RM42 970 =  RM859 400

                 The amount of sales for 20 motorcycles is RM859 400.




                2  Multiply RM38 921.60 by 10.                  3   a    100 × RM6 240.70 = RM624 070

                    10 × RM38 921.60 =                                       × RM6 240.70 = RM62 407
                    10 × RM38 921.60 = RM389 216.00
                                                                    b     1 000 × RM284.1 5 = RM284 150
                    10 × RM38 921.60 =  RM389 216
                                                                        100 ×       = RM28 415



                                                                         a
                                                              Complete       and       .
                                                                                 b



                  100 × RM7 920.50 = RM792 050               10 × RM79 205 = RM792 050

                  Construct another number sentence with RM792 050 as the answer.




                                   • Emphasise that the multiplication of values of money involving    95
                             3.1.3
                                     ringgit and sen is similar to the multiplication of decimal numbers.
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