## ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 1 Rational Numbers Ex 1.4

Question 1.

Find the value of the following:

Solution:

Question 2.

State whether the following statements are true or false:

(i) \(\frac { -9 }{ 13 }\) ÷ \(\frac { 2 }{ 7 }\) is a rational number.

Solution:

Question 3.

The product of two rational numbers is \(\frac { -11 }{ 12 }\). If one of them is 2\(\frac { 4 }{ 9 }\), find the other.

Solution:

Product of two rational numbers = \(\frac { -11 }{ 12 }\)

Question 4.

By what rational number should \(\frac { -7 }{ 12 }\) be multiplied to get the product as \(\frac { 5 }{ 14 }\) ?

Solution:

Product = \(\frac { 5 }{ 14 }\)

Question 5.

By what rational number should -3 is divided to get \(\frac { -9 }{ 13 }\)?

Solution:

Required number = -3 ÷ \(\frac { -9 }{ 13 }\)

Question 6.

Divide the sum of \(\frac { -13 }{ 8 }\) and \(\frac { 5 }{ 12 }\) by their difference.

Solution:

Question 7.

Divide the sum of \(\frac { 8 }{ 3 }\) and \(\frac { 4 }{ 7 }\) by the product of \(\frac { -3 }{ 7 }\) and \(\frac { 14 }{ 9 }\).

Solution:

Question 8.

If p = \(\frac { -3 }{ 2 }\), q = \(\frac { 4 }{ 5 }\) and r = \(\frac { -7 }{ 12 }\), then verify that (p ÷ q) ÷ r ≠ p ÷ (q ÷ r).

Solution: