Question

What is the multiplicative identity of rational numbers?
fill in the blank!

Answer 1

Answer:

The multiplicative identity of any rational number will be 1.

Explanation:

In mathematics, the multiplicative identity of a set of numbers is a number 1, that is in that set, such that if we multiply any other number, a, in that set by 1, we get a back out. That is, if 1 is the multiplicative identity of a set, and a is a number in that set, then 1 × a = a × I = a.

Answer 2

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$\small\underline\mathcal\purple{The \: multiplicative \: identity \: for \: rational \: numbers \: is \: 1.}$

We know that whole numbers are a subset of integers which in turn are a subset of rational numbers. Also, 1 is the multiplicative identity for rational numbers because the product of 1 and any rational number is the rational number itself.

Thus, 1 is the multiplicative identity for whole numbers, integers and rational numbers.