## Selina Concise Mathematics Class 8 ICSE Solutions Chapter 5 Playing with Number

**Selina Publishers Concise Mathematics Class 8 ICSE Solutions Chapter 5 Playing with Number**

### Playing with Number Exercise 5A – Selina Concise Mathematics Class 8 ICSE Solutions

Question 1.

Write the quotient when the sum of 73 and 37 is divided by

(i) 11

(ii) 10

Solution:

Question 2.

Write the quotient when the sum of 94 and 49 is divided by

(i) 11

(ii) 13

Solution:

Question 3.

Find the quotient when 73 – 37 is divided by

(i) 9

(ii) 4

Solution:

Question 4.

Find the quotient when 94 – 49 is divided by

(i) 9

(ii) 5

Solution:

Question 5.

Show that 527 + 752 + 275 is exactly divisible by 14.

Solution:

Question 6.

If a = 6, show that abc = bac.

Solution:

Question 7.

If a > c; show that abc – cba = 99(a – c).

Solution:

Question 8.

If c > a; show that cba – abc = 99(c – a).

Solution:

Question 9.

If a = c, show that cba – abc = 0.

Solution:

Question 10.

Show that 954 – 459 is exactly divisible by 99.

Solution:

### Playing with Number Exercise 5B – Selina Concise Mathematics Class 8 ICSE Solutions

Question 1.

Solution:

Question 2.

Solution:

Question 3.

Solution:

Question 4.

Solution:

Question 5.

Solution:

Question 6.

Solution:

Question 7.

Solution:

Question 8.

Solution:

Question 9.

Solution:

Question 10.

Solution:

Question 11.

Solution:

### Playing with Number Exercise 5C – Selina Concise Mathematics Class 8 ICSE Solutions

Question 1.

Find which of the following nutpbers are divisible by 2:

(i) 192

(ii) 1660

(iii) 1101

(iv) 2079

Solution:

Question 2.

Find which of the following numbers are divisible by 3:

(i) 261

(ii) 111

(iii) 6657

(iv) 2574

Solution:

Question 3.

Find which of the following numbers are divisible by 4:

(i) 360

(ii) 3180

(iii) 5348

(iv) 7756

Solution:

Question 4.

Find which of the following numbers are divisible by 5 :

(i) 3250

(ii) 5557

(iii) 39255

(iv) 8204

Solution:

Question 5.

Find which of the following numbers are divisible by 10:

(i) 5100

(ii) 4612

(iii) 3400

(iv) 8399

Solution:

Question 6.

Which of the following numbers are divisible by 11 :

(i) 2563

(ii) 8307

(iii) 95635

Solution:

### Playing with Number Exercise 5D – Selina Concise Mathematics Class 8 ICSE Solutions

For what value of digit x, is :

Question 1.

1×5 divisible by 3?

Solution:

Question 2.

31×5 divisible by 3?

Solution:

Question 3.

28×6 a multiple of 3?

Solution:

Question 4.

24x divisible by 6 ?

Solution:

Question 5.

3×26 a multiple of 6?

Solution:

Question 6.

42×8 divisible by 4?

Solution:

Question 7.

9142x a multiple of 4?

Solution:

Question 8.

7×34 divisible by 9?

Solution:

Question 9.

5×555 a multiple of 9 ?

Solution:

Question 10.

3x^{2} divisible by 11?

Solution:

Question 11.

5x^{2} a multiple of 11?

Solution: