## Selina Concise Mathematics Class 6 ICSE Solutions Chapter 9 Playing with Numbers

**Selina Publishers Concise Mathematics Class 6 ICSE Solutions Chapter 9 Playing with Numbers**

### Playing with Numbers Exercise 9A – Selina Concise Mathematics Class 6 ICSE Solutions

(Using BODMAS)

Question 1.

19 – (1 + 5) – 3

Solution:

Question 2.

30 x 6 + (5 – 2)

Solution:

Question 3.

28 – (3 x 8) + 6

Solution:

Question 4.

9 – [(4 – 3) + 2 x 5]

Solution:

Question 5.

[18 – (15 – 5) + 6]

Solution:

Question 6.

[(4 x 2) – (4 + 2)] + 8

Solution:

Question 7.

48 + 96 – 24 – 6 x 18

Solution:

Question 8.

22 – [3 – {8 – (4 + 6)}]

Solution:

Question 9.

Solution:

Question 10.

60 – {16 + (4 x 6 – 8)}

Solution:

Question 11.

Solution:

Question 12.

15 – [16 – {12 + 21 ÷ (9 – 2)}]

Solution:

### Playing with Numbers Exercise 9B – Selina Concise Mathematics Class 6 ICSE Solutions

Question 1.

Fill in the blanks :

(i) On dividing 9 by 7, quotient = …………. and remainder = ……….

(ii) On dividing 18 by 6, quotient = …………. and remainder = ………….

(iii) Factor of a number is ………….. of …………..

(iv) Every number is a factor of …………….

(v) Every number is a multiple of …………..

(vi) …………. is factor of every number.

(vii) For every number, its factors are ………… and its multiples are …………..

(viii) x is a factor of y, then y is a ………… of x.

Solution:

Question 2.

Write all the factors of :

(i) 16

(ii) 21

(iii) 39

(iv) 48

(v) 64

(vi) 98

Solution:

Question 3.

Write the first six multiples of :

(i) 4

(ii) 9

(iii) 11

(iv) 15

(v) 18

(vi) 16

Solution:

Question 4.

The product of two numbers is 36 and their sum is 13. Find the numbers.

Solution:

Question 5.

The product of two numbers is 48 and their sum is 16. Find the numbers.

Solution:

Question 6.

Write two numbers which differ by 3 and whose product is 54.

Solution:

Question 7.

Without making any actual division show that 7007 is divisible by 7.

Solution:

Question 8.

Without making any actual division, show that 2300023 is divisible by 23.

Solution:

Question 9.

Without making any actual division, show that each of the following numbers is divisible by 11.

(i) 11011

(ii) 110011

(iii) 11000011

Solution:

Question 10.

Without actual division, show that each of the following numbers is divisible by 8 :

(i) 1608

(ii) 56008

(iii) 240008

Solution:

### Playing with Numbers Exercise 9C – Selina Concise Mathematics Class 6 ICSE Solutions

Question 1.

find which of the following numbers are divisible by 2 :

(i) 352

(ii) 523

(iii) 496

(iv) 649

Solution:

Question 2.

Find which of the following number are divisible by 4 :

(i) 222

(ii) 532

(iii) 678

(iv) 9232

Solution:

Question 3.

Find the which of the following numbers are divisible by 8 :

(i) 324

(ii) 2536

(iii) 92760

(iv) 444320

Solution:

Question 4.

Find which of the following numbers are divisible by 3 :

(i) 221

(ii) 543

(iii) 28492

(iv) 92349

Solution:

Question 5.

Find which of the following numbers are divisible by 9 :

(i) 1332

(ii) 53247

(iii) 4968

(iv) 200314

Solution:

Question 6.

Find which of the following number are divisible by 6 :

(i) 324

(ii) 2010

(iii) 33278

(iv) 15505

Solution:

Question 7.

Find which of the following numbers are divisible by 5 :

(i) 5080

(ii) 66666

(iii) 755

(iv) 9207

Solution:

Question 8.

Find which of the following numbers are divisible by 10 :

(i) 9990

(ii) 0

(iii) 847

(iv) 8976

Solution:

Question 9.

Find which of the following numbers are divisible by 11 :

(i) 5918

(ii) 68,717

(iii) 3882

(iv) 10857

Solution:

Question 10.

Find which of the following numbers are divisible by 15 :

(i) 960

(ii) 8295

(iii) 10243

(iv) 5013

Solution:

Question 11.

In each of the following numbers, replace M by the smallest number to make resulting number divisible by 3 :

(i) 64 M 3

(ii) 46 M 46

(iii) 27 M 53

Solution:

Question 12.

In each of the following numbers replace M by the smallest number to make resulting number divisible by 9.

(i) 76 M 91

(ii) 77548 M

(iii) 627 M 9

Solution:

Question 13.

In each of the following numbers, replace M by the smallest number to make resulting number divisible by 11.

(i) 39 M 2

(ii) 3 M 422

(iii) 70975 M

(iv) 14 M 75

Solution:

Question 14.

State, true or false :

(i) If a number is divisible by 4. It is divisible by 8.

(ii) If a number is a factor of 16 and 24, it is a factor of 48.

(iii) If a number is divisible by 18, it is divisible by 3 and 6.

(iv) If a divide b and c completely, then a divides (i) a + b (ii) a – b also completely.

Solution: