Page 63 - SK Year 5 Mathematics DLP
P. 63

6   42 participants registered online for the Young Entrepreneurs Camp
                      each day. A total number of 252 participants registered in p days.
                      What is the value of p?


                         Solution

                                 42 participants registered online for the Young
                      Given
                                 Entrepreneurs Camp each day. A total number
                                 of 252 participants registered in p days.


                      Asked for       value of p                               Number sentence
                                         1 day        1 × 42 = 42                 p × 42 = 252
                      Calculate        p days         p × 42 = 252

                                     Simple example. p × 42 = 252                            Check

                                       2 × 3 = 6              p = 252 ÷ 42                        1
                                            2 = 6 ÷ 3         p = 6                6              4 2
                                                                          42 2 5 2           ×       6
                                          6 × 42 = 252                                          2 5 2
                                                                             −2 5 2
                                         The value of p is 6.                      0



                   7   360 bags of fertilizer were distributed equally to m smallholders.
                      Each smallholder received 30 bags. What is the value of m?



                         Solution


                        360 bags of fertilizer                       Find the
                        distributed equally to                       value of         360 ÷ m = 30
                        m smallholders. Each                         m.
                        smallholder received 30 bags.
                                                                               360 ÷ m = 30
                                                              Check                    m = 360 ÷ 30
                            360 ÷ 12 = 30
                                                       12 × 30 = 360                   m = 12
                           The value of m
                                 is 12.                                                     1 2
                                                                                           3 6 0  = 12
                                                                                             30
                                                                                             1


                                                                                                       55
                             1.9.3  • Use trial and error method to solve problems involving unknown.
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