A straight line with equal spacing. Numbers increase going right. Used to show addition (move right), subtraction (move left), and compare numbers. 0 is the starting point. Every whole number has a unique position.
How to study this topic
Read the core explanation once without solving.
Open the formula links below and connect them with the topic meaning.
Practice the 10 example pages one by one.
Use the AI ask page for text, voice or image-based doubts.