Is there a term for numbers like 0.5, 9.15, 4.22? [duplicate]

I know that in some country, there is a term for numbers like

0.5, 9.15, 4.22

I mean number with dot(.) in its expression.

I sought for the term in English. It was

Decimal Number

But the term "decimal number" means just base-10 number.

3, 19, 277 

Above numbers are in base-10 form, so they are decimal number (even though they do not have dot(.))

Is there a exclusive term for numbers with (.) in its expression ?

Solution 1:

I'm pretty sure decimal fraction is the technical term.

Wikipedia: Decimal fractions
Wikipedia: Decimal fractions and percentages

Solution 2:

There is a term widely used in mathematics for a class of numbers that is not of the class that you seek to describe, which is a "integer", and the closely related concepts of "whole numbers" which include zero but exclude negative numbers, and of "counting numbers" which consist of whole numbers other than zero.

A non-integer real number would be close, but would include for example, 5 and 3/4 (which is a mixed fraction), as well as 5.75, so that would be somewhat broader than the word you are looking for in this case. Also, the word non-integer without the "real number" qualification can be taken to also include complex numbers (i.e. numbers that include the square root of -1), for example. And, non-integer is a word that would only be familiar to people with a fairly advanced high school level mathematics education that they have retained - it is a technical term rather than a vernacular term.

Sometimes the word decimal is used in isolation to mean what you say (e.g. "converting decimals to fractions"), although this word is rarely formally defined in that way in textbooks, it just gets used in this way. This is probably the best word to use to convey the meaning you intend.