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How Can You Perform Lightning-Fast Math Calculations?

1.8M views
•
January 9, 2008
by
TED
YouTube video player
How Can You Perform Lightning-Fast Math Calculations?

TL;DR

You can perform lightning-fast math calculations by using mental techniques and mnemonic devices. Art Benjamin showcases his ability to quickly square two-digit and larger numbers in his head, often outpacing calculators. Utilizing phonetic codes and breaking down complex problems into simpler parts are key strategies for improving mental arithmetic.

Transcript

Good morning, ladies and gentlemen. My name is Art Benjamin, and I am a "mathemagician." What that means is, I combine my loves of math and magic to do something I call "mathemagics." But before I get started, I have a quick question for the audience. By any chance, did anyone happen to bring with them this morning a calculator? Seriously, if you h... Read More

Key Insights

  • 🧮 Art Benjamin combines his love for math and magic to create "mathemagics." He performs calculations faster than calculators using shortcuts and mental calculations.
  • 🧮 Benjamin demonstrates how to square numbers on calculators, including a shortcut method for multiplication.
  • 🧮 Benjamin showcases his ability to mentally square two-digit, three-digit, and four-digit numbers faster than his audience can do on calculators.
  • 📆 Benjamin uses a mnemonic device to determine the day of the week people were born.
  • 📆 Benjamin uses a book of calendars to accurately determine the day of the week for specific dates.
  • 📆 Benjamin engages the audience by asking the year and month of their birth, and then correctly determines the day of the week.
  • 💡 Benjamin relies on phonetic codes to convert numbers into words for easier mental calculations.
  • 💡 Benjamin breaks down complex calculations into smaller parts and adds them together for the final answer.

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Questions & Answers

Q: How does Art Benjamin perform complex calculations mentally?

Art Benjamin uses mnemonic devices and phonetic codes to convert numbers into words, making it easier for him to remember and calculate. He breaks down calculations into smaller parts and combines them to arrive at the answer.

Q: What is the "mathemagics" technique used by Art Benjamin?

"Mathemagics" is the technique used by Art Benjamin to perform complex calculations mentally. He combines his love for math and magic to entertain audiences while showcasing his ability to perform calculations faster than calculators.

Q: How does Art Benjamin square four-digit numbers in his head?

Art Benjamin squares four-digit numbers by breaking down the calculation into three parts: squaring the first two digits, squaring the last two digits, and multiplying the first two digits by the last two digits and doubling the result. He then adds up these three parts to arrive at the squared number.

Q: What is the phonetic code used by Art Benjamin in his calculations?

The phonetic code is a mnemonic device used by Art Benjamin to convert numbers into words. Each digit has a corresponding sound or letter that he associates with a word, making it easier for him to remember and perform calculations mentally.

Summary & Key Takeaways

  • Art Benjamin combines his love for math and magic to perform "mathemagics."

  • He demonstrates his ability to multiply two-digit numbers, square numbers, and even square four and five-digit numbers mentally.

  • Art uses mnemonic devices and phonetic codes to convert numbers into words, making it easier for him to remember and calculate.


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