Table of Contents

Toggle## Class 6, Maths, Chapter 3, Exercise 3.1 Solutions

**Q.1. Write ****all the factors of the following numbers:**

**(a) 24 **

**(b) 15 **

**(c) 21**

**(d) 27 **

**(e) 12 **

**(f) 20**

**(g) 18 **

**(h) 23 **

**(i) 36**

**Ans:**

**(a) 24**

24 = 1 × 24

24 = 2 × 12

24 = 3 × 8

24 = 4 × 6

24 = 6 × 4

Hence, the factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24

** **

**(b) 15**

15 = 1 × 15

15 = 3 × 5

15 = 5 × 3

Hence, the factors of 15 are 1, 3, 5 and 15

**(c) 21**

21 = 1 × 21

21 = 3 × 7

21 = 7 × 3

Hence, the factors of 21 are 1, 3, 7 and 21

**(d) 27**

27 = 1 × 27

27 = 3 × 9

27 = 9 × 3

Hence, the factors of 27 are 1, 3, 9 and 27

**(e) 12**

12 = 1 × 12

12 = 2 × 6

12 = 3 × 4

12 = 4 × 3

Hence, the factors of 12 are 1, 2, 3, 4, 6 and 12

**(f) 20**

20 = 1 × 20

20 = 2 × 10

20 = 4 × 5

20 = 5 × 4

Hence, the factors of 20 are 1, 2, 4, 5 10 and 20

** **

**(g) 18**

18 = 1 × 18

18 = 2 × 9

18 = 3 × 6

18 = 6 × 3

Hence, the factors of 18 are 1, 2, 3, 6, 9 and 18

**(h) 23**

23 = 1 × 23

23 = 23 × 1

Hence, the factors of 23 are 1 and 23

**(i) 36**

36 = 1 × 36

36 = 2 × 18

36 = 3 × 12

36 = 4 × 9

36 = 6 × 6

Thus, the factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18 and 36

**Q.2. Write ****first five multiples of:**

**(a) 5 **

**(b) 8 **

**(c) 9**

**Ans:**

**(a) ****First five multiples of 5 are:**

5 × 1 = 5

5 × 2 = 10

5 × 3 = 15

5 × 4 = 20

5 × 5 = 25

Hence, the first five multiples of 5 are 5, 10, 15, 20 and 25

**(b) ****First five multiples of 8 are:**

8 × 1 = 8

8 × 2 = 16

8 × 3 = 24

8 × 4 = 32

8 × 5 = 40

Hence, the first five multiples of 8 are 8, 16, 24, 32 and 40

**(c) ****First five multiples of 9 are:**

9 × 1 = 9

9 × 2 = 18

9 × 3 = 27

9 × 4 = 36

9 × 5 = 45

Hence, the first five multiples of 9 are 9, 18, 27, 36 and 45

**Q.3. Match the items in column 1 with the items in column 2.**

**Ans: ****(i)****→****(b), (ii) ****→**** (d), (iii) ****→**** (a), (iv) ****→**** (f), (v) ****→**** (e)**

**Q.4. Find all the multiples of 9 upto 100.**

**Ans: **

All the multiples of 9 up to 100 are:

9 × 1 = 9

9 × 2 = 18

9 × 3 = 27

9 × 4 = 36

9 × 5 = 45

9 × 6 = 54

9 × 7 = 63

9 × 8 = 72

9 × 9 = 81

9 × 10 = 90

9 × 11 = 99

∴ All the multiples of 9 upto 100 are:

9, 18, 27, 36, 45, 54, 63, 72, 81, 90 and 99.

## NCERT Solutions For Class 6 Maths, Chapter 3 Playing With Numbers (All Exercises)

**Class 6, Maths, Chapter 3, Playing With Numbers **

**Class 6, Maths, Chapter 3, Playing With Numbers, Exercise 3.1** **← You are here**

**Class 6, Maths, Chapter 3, Playing With Numbers, Exercise 3.2**

**Class 6, Maths, Chapter 3, Playing With Numbers, Exercise 3.3**

**Class 6, Maths, Chapter 3, Playing With Numbers, Exercise 3.4**

**Class 6, Maths, Chapter 3, Playing With Numbers, Exercise 3.5**

**Class 6, Maths, Chapter 3, Playing With Numbers, Exercise 3.6**

**Class 6, Maths, Chapter 3, Playing With Numbers, Exercise 3.7**