Q1
Which of these is a rational number?
A3/4
B√2
Cπ
D√3
CBSEClass 8 (CBSE)MathematicsCh 3 · Topic 1
Rational Numbers
Learning about numbers that can be expressed as a fraction.
Core concept
Between any two rational numbers, there exist infinitely many other rational numbers — for example, between 1/2 and 1/3, numbers like 5/12 or 7/24 also fit — a property that distinguishes rational numbers as 'dense' on the number line. Numbers like 0.5 (=1/2) and 0.333... (=1/3) are rational since they can be written as exact fractions, while numbers like √2 cannot be expressed this way and are therefore classified as irrational.
Exam highlight
Key diagram
Keywords worth remembering
Trending
rational numberscbse class 8
Most searched
CBSE class 8 rational numbers
Quick revision
Study resources
Notes & downloads
Quick notes
• A rational number can be expressed as p/q, where p, q are integers and q≠0.
• Every integer is a rational number (can be written as itself over 1).
• Rational numbers include terminating and repeating decimals.
• Between any two rational numbers, infinitely many other rational numbers exist.