Question 8
One(1) is:
(a) the identity for addition of rational numbers.
(b) the identity for subtraction of rational numbers.
(c) the identity for multiplication of rational numbers.
(d) the identity for division of rational numbers.

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Solution

One (1) is the identity for multiplication of rational numbers i.e option (c)
That means if a is a rational number
Then, a.1 = 1.a = a

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Question 8
One(1) is:
(a) the identity for addition of rational numbers.
(b) the identity for subtraction of rational numbers.
(c) the identity for multiplication of rational numbers.
(d) the identity for division of rational numbers.

Question 7
Zero (0) is:
(a) the identity for addition of rational numbers.
(b) the identity for subtraction of rational numbers.
(c) the identity for multiplication of rational numbers.
(d) the identity for division of rational numbers.

The rational number 1 is the multiplicative identity for rational numbers.

The rational number $0$ is the additive identity for rational numbers.

Why is zero called the identity for the addition of rational numbers

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Identities of Mathematical Operations

Standard VIII Mathematics

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Question 8 One(1) is: (a) the identity for addition of rational numbers. (b) the identity for subtraction of rational numbers. (c) the identity for multiplication of rational numbers. (d) the identity for division of rational numbers.

One (1) is the identity for multiplication of rational numbers i.e option (c) That means if a is a rational number Then, a.1 = 1.a = a

Question 8
One(1) is:
(a) the identity for addition of rational numbers.
(b) the identity for subtraction of rational numbers.
(c) the identity for multiplication of rational numbers.
(d) the identity for division of rational numbers.

One (1) is the identity for multiplication of rational numbers i.e option (c)
That means if a is a rational number
Then, a.1 = 1.a = a