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SAI International School

                                                        CLASS-VI
                                                      Mathematics
                                              CHAPTER 5- PRIME TIME
                                                      Lesson Notes


                    SUBTOPIC: Prime Factorisation

                         Prime Factorisation: When a number is expressed as a product of its
                          factors we say that the number has been factorised and when the

                          factors are prime number then the process is called prime factorisation
                          method.
                          Example- Prime factorisation of 36






















                         The prime factorisation of 36 is 2×2×3×3.
                         When we find the prime factorisation of a number, we first write it as a

                          product of two factors. For example, 72 = 12 × 6. Then, we find the
                          prime factorisation of each of the factors. In the above example, 12 = 2 ×
                          2 × 3 and 6 = 2 × 3.
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