Fast Math Trick - How to multiply numbers under twenty faster than a calculator

TL;DR

Learn how to multiply two numbers in their teens instantly using a mental trick.

Transcript

good day welcome to Tech math Channel looking at one of my favorite math calculation tricks today where I'll show you how to multiply two numbers in their teens instantly that's a nice easy trick to learn and I'll have you smashing out these calculations and putting the wind right up your teacher quick smart all right here goes and you got three se... Read More

Key Insights

• #️⃣ The mental trick for multiplying numbers in their teens involves adding the units numbers and multiplying the units numbers separately.
• 👻 The trick saves time and allows for quick mental calculation of multiplication.
• ❓ The results can be obtained without writing anything down.
• 🔞 The trick can be used for numbers other than those in their teens, but it is most effective for numbers in their teens.
• ⚾ The trick is based on patterns and simplifies the multiplication process.
• 🍳 Breaking down the multiplication into smaller steps makes it easier to perform mentally.
• ❓ The trick can be applied to various examples and produces accurate results.

Questions & Answers

Q: How can I quickly multiply two numbers in their teens using mental calculation?

To quickly multiply two numbers in their teens, add the units numbers together and multiply the units numbers separately. Then, add the two results to get the final answer.

Q: What is the first step in the mental trick for multiplying numbers in their teens?

The first step is to look at the units numbers of the two numbers being multiplied and add them together.

Q: Can this mental trick be used for multiplying numbers other than those in their teens?

The mental trick can be used for any two numbers, but it works particularly well for numbers in their teens because of the patterns that emerge.

Q: Why does this mental trick work for multiplying numbers in their teens?

The trick works because it simplifies the multiplication process by breaking it down into adding the units numbers and multiplying the units numbers separately.

Summary & Key Takeaways

• The content explains a mental trick to quickly multiply numbers in their teens.

• The trick involves adding the units numbers and multiplying the units numbers separately.

• By adding the two results, the answer is obtained without writing anything down.