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Rational and non rational numbers 1

ClassNotes Team 3 MIN READUPDATED 5 JUL 2026

Mathematics J.S.S 3 First Term

Theme: Number and Numeration

Sub Theme: Whole Number

WEEK 8

Rational and non-rational numbers 1

Performance Objectives

Students should be able to;

  1. Identify Rational Numbers
  2. Identify Irrational Numbers
  3. Identify Surds

Rational numbers

Content

A rational number is part of a whole expressed as a fraction, decimal or a percentage. In the same vein, a number is also rational if it can be written as a fraction where the top number of the fraction and bottom number are both whole numbers.

The term rational is derived from the word ‘ratio’ because the rational numbers are figures which can be written in the ratio form.

Every whole number, including negative numbers and zero, is a rational number. This…