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Curated by: Khan Academy India - English (8 videos)
What happens when you add zero to a number? Nothing, right? This special property is why zero is called the 'additive identity'! In this video, we explore this fundamental concept, starting with integers and then seeing how it applies to all rational numbers. Join us to understand why this simple idea is a key building block in mathematics. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/ncert-class-8/x4eb5a6db275bcce1:rational-numbers-ncert-new 0:00 - Adding Numbers on a Number Line 0:16 - The Effect of Adding Zero 0:43 - What is Additive Identity? 1:07 - Does Additive Identity Apply to Rational Numbers? 1:21 - Example with a Fraction (1/3 + 0) 2:05 - Conclusion: 0 is the Additive Identity for All Rational Numbers 2:10 - Bonus Question: Real-life Applications Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Sarath Penumuru