Number Sense

Free

Intermediate

Video

Video

Contest Math

4 Lessons

0% Not started

In this class, we’ll cover a large variety of different tricks and techniques to allow one to improve his or her mental math speed. This will cover a variety of strategies, such as fast multiplication (for many, many numbers), fast modular arithmetic, and calculating the sums of certain sequences quickly. Competitions like TMSCA and Mathleague have classes dedicated to this subject, but regardless of whether you are preparing for them, this course will help you become much faster at computational math.

Number Sense

This lesson teaches multiplying by everything.

Video lesson

This lesson teaches factoring, mods and divisors

Video lesson

This lesson teaches sequences and polynomials.

Video lesson

This lesson teaches estimation and miscellaneous things.

Video lesson

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About the teacher

Andy Jiang

Andy is a senior at Westwood High School in Austin, Texas and is the President of Operations. For longer than he can remember, he has been passionate about math and coding and is currently a 5x AIME qualifier, USAJMO qualifier, 2x USAMO qualifier, USACO Platinum division participant, and the president of his school’s Mu Alpha Theta honor society. He has spent his past three summers attending Texas State University’s Honors Summer Math Camp, where he has conducted research on knot theory and secure data compression. He hopes that his time at Kid Teach Kid allows him to share his passion in math and coding with others. In his free time, Andy enjoys playing tennis, playing ultimate, watching comedy sketches, and driving around the city.

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