Chapter 3 Playing with Numbers

Class 6  Mathematics Chapter 3 | Playing with Numbers | Exercise 3.7 Question 1: Renu purchases two bags of fertilizer of weights 75 kg and 69 kg. Find the maximum value of weight which can measure the weight of the fertilizer exact number of times. Answer 1: For finding maximum weight, we have to find H.C.F. of 75 and 69. Factors of 75 = 3 x 5 x 5 Factors of 69 = 3 … [Read more...] about Exercise 3.7

Class 6 Mathematics Chapter 3 | Playing with Numbers | Exercise 3.6 Question 1: Find the H.C.F. of the following numbers: (a) 18, 48 (b) 30, 42 (c) 18, 60 (d) 27, 63 (e) 36, 84 (f) 34, 102 (g) 70, 105, 175 (h) 91, 112, 49 (i) 18, 54, 81 (j) 12, 45, 75 Answer:  (a) Factors of 18 = 2 x 3 x 3 Factors of 48 = 2 x 2 x 2 x 2 x 3 H.C.F. (18, … [Read more...] about Exercise 3.6

Class 6 Mathematics Chapter 3 | Playing with Numbers | Exercise 3.5 Question 1: Which of the following statements are true: (a) If a number is divisible by 3, it must be divisible by 9. (b) If a number is divisible by 9, it must be divisible by 3. (c) If a number is divisible by 18, it must be divisible by both 3 and 6. (d) If a number is divisible by 9 and 10 … [Read more...] about Exercise 3.5

Class 6 Mathematics Chapter 3| Playing with Numbers | Exercise 3.4 Question 1: Find the common factors of: (a) 20 and 28 (b) 15 and 25 (c) 35 and 50 (d) 56 and 120 Answer 1: (a) Factors of 20 = 1, 2, 4, 5, 10, 20 Factors of 28 = 1, 2, 4, 7, 14, 28 Common factors = 1, 2, 4 (b) Factors of 15 = 1, 3, 5, 15 Factors of 25 = 1, 5, 25 Common factors = … [Read more...] about Exercise 3.4

Class 6 Mathematics Chapter 3 | Playing with Numbers | Exercise 3.3 Question 1 : Using divisibility tests, determine which of the following numbers are divisible by 2; by 3; by 4; by 5; by 6; by 8; by 9; by 10 ; by 11 (say, yes or … [Read more...] about Exercise 3.3