rational number

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Related to rational number: real number, irrational number

rational number

A number capable of being expressed as an integer or a quotient of integers, excluding zero as a denominator.

rational number

(Mathematics) any real number of the form a/b, where a and b are integers and b is not zero, as 7 or 7/3

ra′tional num′ber

a number that can be expressed exactly by a ratio of two integers.

ra·tion·al number

A number that can be expressed as an integer or a quotient of integers. For example, 2, -5, and 1/2 are rational numbers.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.rational number - an integer or a fraction
real, real number - any rational or irrational number
fraction - the quotient of two rational numbers
racionální číslo
nombre rationnel
racionalni broj
racionális szám
numero razionale
rationellt tal
References in periodicals archive ?
Contributing to students' low performance was their weak understanding of and computation with rational numbers.
As noted by Charalambous and Pitta-Pantazi (2007) the concept of part-whole partitioning takes up the bulk of the curriculum in younger grades, because it is critical to understanding other rational number concepts such as ratios, quotients, and measure.
to denote real numbers, positive real numbers, negative real numbers, rational numbers, integers, and positive integers, respectively.
The rational number constructs: Its elements and mechanisms.
In order to further examine the perceptions held by pre-service teachers with respect to rational number exponents, we surveyed our students enrolled in Calculus II and II, History of Mathematics, Probability and Statistics, and Linear Algebra.
Consequently, condition r [member of] Q cannot be fulfilled all time because of irrational numbers, which fill densely neighborhood of any rational number.
Furthermore, it is a topic in relation to which conceptual understanding is perhaps less valued than for other topics in which such understanding more clearly forms a basis for further conceptual development and flexible application (understanding fractions as a basis for understanding and working with other forms of rational number would be an example).
Much of the research on fractions is contained within broader research programs in relation to the rational number system.
To study the problem of what is common to the rational number distribution and resonance phenomena it is necessary to have a one-dimensional picture of the function Ra (x) on the number line.
An introduction to the rational number system is taught very early in the elementary algebra curriculum, expanding the concept of the common fraction.
An Australian study found that children who were successful with the solution of rational number tasks exhibited greater whole number knowledge and more flexible solution strategies.