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Nine times table tricks - learn the fast way!

94.4K views
•
January 24, 2013
by
tecmath
YouTube video player
Nine times table tricks - learn the fast way!

TL;DR

Learn two simple tricks to quickly solve the nine times table using your hands or by looking at the number being multiplied.

Transcript

good day and welcome to the tech math channel in this video we're going to be having a look at a few little tricks on how to do the nine times table this are a few little tricks mainly inspired because I've been teaching my own little kids at home uh how to do the nine times table and they've ended up finding it to be the easiest of all the time st... Read More

Key Insights

  • 🤗 The video demonstrates two tricks: using hands to solve the nine times table and looking at the number being multiplied.
  • 🖐️ With hand tricks, folding over the corresponding finger helps determine the answer.
  • 🍹 The sum of the digits in the answer for the nine times table always equals nine.
  • ✖️ These tricks can be applied to all numbers being multiplied by nine.
  • 🤗 The hand trick can be used for larger numbers, while the sum of digits trick remains consistent.
  • 🎮 The video also hints at a future video about dividing by nine using a different trick.
  • 👶 The tricks provided make it easy for children to learn and understand the nine times table.

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Questions & Answers

Q: How can I use my hands to solve the nine times table?

To use your hands, assign numbers to each finger and fold over the corresponding finger. Then count the fingers on both sides of the folded finger to find the answer.

Q: How does looking at the number being multiplied help in the nine times table?

By observing that the sum of the digits in each answer equals nine, you can directly determine the second digit of the answer based on the number being multiplied.

Q: Can these tricks be applied to larger numbers?

Yes, the tricks work for any number being multiplied by nine, including larger numbers. The patterns remain the same.

Q: Are there any other tricks for the nine times table?

The video briefly mentions a trick for dividing large numbers by nine, which can be useful and will be explained in another video.

Summary & Key Takeaways

  • The video demonstrates two tricks to easily solve the nine times table: using your hands as a visual aid and looking at the number being multiplied by nine.

  • By counting fingers on folded hands, you can determine the answer for any multiplication involving nine.

  • Alternatively, by looking at the number being multiplied by nine, you can find a pattern where the sum of the digits always equals nine.


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