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### Grade 8 - Mathematics5.20 Factor and Multiple

 If 'b' divides 'a' leaving zero remainder then 'b' is called a factor or divisor of a, and a is called multiple of b. Example: In the problem 5|25, 1. 5 is a factor of 25. 2. 5 is a divisor of 25. 3. 25 is a multiple of 5. Example: In the problem 9 x 7 = 63, 1. 9 is a factor of 63. 2. 7 is a factor of 63. 3. 63 is a multiple of both 9 and 7. Example: Write all the factor of 28. 28 = {1,2,4,7,14,28} Write down all the factor of 6. 6 = {1,2,3,6} From above examples we can observe that, 1. 1 is a least factor of every natural number. 2. Every natural number is the factor of itself and it is the greatest. Directions: Choose the correct answer. Also write at least five examples of factors and multiples of your own.
 Q 1: Write the factors of 16.{1,2,4,8,12,16}{1,2,4,6,8,16}{1,2,4,8,16} Q 2: Write the factors of 72.{1,2,3,4,6,8,9,12,18,24,28,36,72}{1,2,3,4,6,8,9,12,18,24,36,72}{1,2,3,4,6,8,9,12,18,24,36,42,72} Q 3: 18|54 means,35 is a factor of 1818 is a factor of 35 Q 4: Write the factors of 48.{1,2,3,4,6,8,12,13,16,24,48}{1,2,3,4,5,6,8,12,16,24,48}{1,2,3,4,6,8,12,16,24,48} Q 5: 17|34 means,17 is a multiple of 3434 is a multiple of 17 Q 6: Write the factors of 7.{1,7}{1,5,7}{1,3,7} Q 7: 12|144 means,12 is a divisor of 144144 is a divisor of 12 Q 8: 15|90 means,15 is a multiple of 9090 is a multiple of 15 Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!