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Warmup Problem

Algebra Level 2

What is \(99^2 - 98^2 \, ?\)

Note: Try it without using a calculator.

199 187 197 198

View solutions

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

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That seems reasonable. Find out if you're right!

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by Taru Bhardwaj

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