Page 1 : KVKMMUP SCHOOL DEVERKOVIL, , 6. NUMBERS, , Let s make a rectangle, A rectangle with 20 dots:, , , , , , , , , , , , , , , , , , , , , , Dots along the width = 4, Dots along the height = 5, , , , , , , , , , , , Ll, @ eee eee eee ©9006 900000060000000, LETT tity ttt ey, , , , , , , , , , , , , , , , , , , , , , , , Dots along the width = 10 ' Dots along the width = 20, Dots along the height = 2 | Dots along the height = 1, , , , , , , , , , 20=(1.20).(2.10)
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KVKMMUP SCHOOL DEVERKOVIL, , , , , , , , , , , , , , , , @ Make different rectangles with 30 dots, 30 1, - : 30=(1,30),(2,15),(3,10),(5,6), 10 3 =1,2,3,5,6,10,15,30, 6 5, @ The factors of 72, = eer = a, That is, Factors of 72 are, ao: —, ! | 72+ 2=36 72* 3=24, , , , 1 x36 = 72 3 x 24 = 72, , eee) 24, 36, 72, eT, , , , , , STAY HOME, STAY SAFE BHASKARA MATHS CLUB
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KVKMMUP SCHOOL DEVERKOVIL, , ia 2+ 6=19, , , , , , 72+ 4=18, , hy 18=72 6x 12= 72, , 1,2,3,4,6 12,18 24, 36, 72, , , , , , 3,4, 6 ,8 .9 ,412 ,18 24 . 36772, , Lite 23 7), , , , , , , , (1,72) (2, 36), , (3, 24) (4, 18), (6, 12) (8, 9), , , , , , , , , , STAY HOME, STAY SAFE BHASKARA MATHS CLUB
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KVKMMUP SCHOOL DEVERKOVIL, , , , @When a number is completely, divisible by another number ,then it is a, factor of the given number, , @One, is a factor of every number, , @The greatest factor of a number is the, number itself, , , , , , Factors of 36 = (1,36 ) (2,18 )(3,12)(4,9)(6,6), , = 1,2,3,4,6,9,12,18,36 9 factors, Factors of 25 =(1,25)( 5,5), , = 15,25 3 factors, , , , , , When a number is multiplied by the, same number,the number of factors of, , the product will be odd ed, , ACTIVITY 1, , Find out the numbers having odd number of factors 1, to 100, , , , , , , , , , STAY HOME, STAY SAFE BHASKARA MATHS CLUB
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KVKMMUP SCHOOL DEVERKOVIL, , , , Factors of 2 =1,2, Factors of 5 =1,5, Factors of 7 =1,7, , Prime numbers, Numbers having only two factors ( one and the, number itself ) are called prime numbers, , ACTIVITY 2, , , , , , , , , , Find all prime numbers between 1 and, 100, , , , , , , , ACTIVITY 3, , , , , , , , 1. Find all the factors of the numbers below:, (i) 256 = (ii) 625 (iii) 243. (iv) 343 ~—Ss (v) 121, , 2. Which are the numbers between | and 100 having exactly, three factors?, , , , , , , , STAY HOME, STAY SAFE BHASKARA MATHS CLUB