Page 172 - Demo

Arrow-Puffin-4_Semester-1 Maths 171COMMON FACTORSConsider the factors of 6 and 12. Factors of 6 12 1 2 3 6 1 2 3 4 6 12Common factors of 6 and 12 are 1,2,3 and 6.Factors that are common to two or more numbers are called common factors.Therefore, 1,2,3 and 6 are called common factors of 6 and 12.Example 1 : Write the common factors of 12 and 16.Factors of 12 : 1 2 3 4 6 12Factors of 16 : 1 2 4 8 16Common factors of 12 and 16 are 1,2 and 4.4) 10 x 2 = 20 10 and are the factors of 20.5) 4 x 9 = 36 4 and are the factors of 36.II. List all the factors of the following numbers.1) 12 2) 21 3) 24 4) 16 5) 30 6) 817) 72 8) 64 9) 25 10) 96 11) 35 12) 49III. Write 'true' or 'false'.1) 8 is a factor of 40. [ ]2) 1 is a factor of every number. [ ]3) Every number is not a factor of itself. [ ]4) 4 x 6 = 24, 4 and 6 are factors of 24. [ ]5) 9 is a factor of 108. [ ]6) 0 is a factor of every number. [ ]7) 5 is a factor of 102. [ ]8) 8 is a factor of 16 and 16 is a factor of 48. [ ] Every number is a multiple as well as a factor of itself.Let's Understand Conceptual Understanding