Chapter 1 Rational Numbers Exercise 1.1

Chapter 1 Rational Numbers Exercise 1.1

Question 1.
Using appropriate properties find:

Solution:

Question 2.
Write the additive inverse of each of the following:

Solution:

Question 3.
Verify that -(-x) = x for

Solution:

Question 4.
Find the multiplicative inverse of the following:

Solution:

Question 5.
Name the property under multiplication used in each of the following:

Solution:
(i) Commutative property of multiplication
(ii) Commutative property of multiplication
(iii) Multiplicative inverse property

Question 6.
Multiply 613 by the reciprocal of −716.
Solution:

Question 7.
Tell what property allows you to compute

Solution:
Since a × (b × c) = (a × b) × c shows the associative property of multiplications.

Question 8.

Solution: