Multiply Faster than You Learned in School!

TL;DR

Learn two efficient methods for quickly multiplying numbers below 100.

Transcript

good day welcome to the tech maath Channel I'm Josh in this video I'm going to show you my two favorite methods for multiplying any two numbers under 100 and no surprise these are not taught in school they're well too awesome for that so let's have a bit of a look at this and in no time you're going to be multiplying faster than a rabbit okay so le... Read More

Key Insights

• ✖️ The video presents two efficient methods for multiplying numbers under 100: rainbow multiplication and cross multiplication.
• ✖️ Rainbow multiplication involves multiplying the digits in each place value separately and combining the results to get the final answer.
• ✖️ Cross multiplication simplifies the process by directly multiplying the digits and adding the results, eliminating the need for separate calculations.
• ❓ Both methods yield the same correct answer, but individuals may have a preference for one method over the other.
• 🫵 The video encourages viewers to try the methods with larger numbers and decide which method they prefer.
• 🐎 Practice and familiarity with the methods can significantly improve multiplication speed and accuracy.
• 🫵 The video emphasizes viewer feedback and encourages viewers to share their preferences and thoughts on the methods.

Questions & Answers

Q: What are the two methods for multiplying numbers under 100 presented in the video?

The two methods are rainbow multiplication and cross multiplication.

Q: How does rainbow multiplication work?

Rainbow multiplication involves multiplying the digits in each place value separately and then combining the results.

Q: How does cross multiplication differ from rainbow multiplication?

Cross multiplication directly multiplies the digits and adds the results, simplifying the process.

Q: Can these methods be used for larger numbers as well?

Yes, the methods can be used for larger numbers by applying the same principles to each digit place.

Summary & Key Takeaways

• The video introduces two methods for multiplying numbers under 100: rainbow multiplication and cross multiplication.

• Rainbow multiplication involves breaking the numbers into their digit places and multiplying them separately.

• Cross multiplication simplifies the process by directly multiplying the digits and adding the results.