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

Solution:

We know that when 1 is multiplied to any rational number, then it gives the same result

Multiplicative identity means any number multiplied by 1 gives the same number

Hence, 1 is called the multiplicative identity of rational numbers

✦ Try This: Is 1 multiplicative identity for 2/3?

Multiplicative identity means any number multiplied by 1 gives the same number

2/3 × 1 = 2/3

Hence, it is true.

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 1

NCERT Exemplar Class 8 Maths Chapter 1 Problem 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

Summary:

1 is multiplicative identity for rational numbers

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