This multiplication trick seems to have it's origins all over!
It's a great trick which uses groupings of numbers and can be used for any numbers!

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#mathtrick
#mathstrick
#multiplicationtrick

In the movie Good Will Hunting the MIT Math Professor sets his students a challenge...that took them two years to solve.
Can you solve it? There is a good chance you can!

BTW want to be a true math genius?
Math geniuses always write on glass.


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This trick is for squaring mixed numbers like the one you see in the thumbnail!
Did your teacher teach it to you?

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How to work out body surface area, and dosages based on this for pediatrics. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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With this mental math trick you will be able to multiply these numbers in your head rapidly - a critical skill in everyday math. In this video we look at tips on how to do multiplication instantly without using a calculator. Fast math is good math! To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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How to work out the area of a triangle with three examples. This lesson also looks at the units used such as square metres and square centimetres.

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This math problem doesn't look very hard, but this problem is deceptively tricky...or is it?

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#mathproblems
#mathriddles
#mathsforfun

How to get to the SketchUp self paced tutorials, and use tools such as the measuring tool, move, rotate and how to get exact sizing. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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Trigonometry is an easy way to work out the unknown sides and angles of a right angled triangle. The trick - know the side names - the opposite, hypotenuse, and adjacent, and know how and when to apply the trigonomic functions - sin, cos and tan. this is the only trick to getting it right every time!
In this lesson, students learn work out unknown angles using use sine, cosine, and tangent. You will need a scientific calculator for the problems in this lesson - and I'll show you how to access one on your computer. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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Division can be done instantly using this amazing math trick!
Moving from left to right trick can be done accurately and faster then a calculator.
In the example provided we will divide 9 into 316249. Amazingly to do this we will not use any division, nor will you have to use your nine times table, instead we will use addition to answer this division question!
This video is part three in a series of three, and leads to how to do long division the fast and easy way!

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Order of operations explained simply...and as an added bonus we'll look at the solutions to some of those clickbaity problems that 'divided the internet'. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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#convertbinary
#binary
#binarydecimal

This math trick allows you to work out the cube root of any number - NOT JUST PERFECT CUBES - instantly. With decimals. With ease. Can you work faster than a calculator? With this tecmath trick you just might! The math shortcut magic is back!

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This trick allows you to multiply two numbers quickly and accurately, using a handy visual method - lines.
It also shows how to deal with zeros and larger numbers, for easier multiplication.

This method does not use any multiplication tables, making it accessible to all learners.

The first of the videos showing how to multiply with lines is here: https://www.youtube.com/watch?v=_AJvshZmYPs&list=PLjbxBzUM6SLkk-Pm6oDtvJc-lsM-xli_1&index=10

Arithmetic made simple!

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How to solve simultaneous equations through the elimination method.

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In this video we look at how to rapidly multiply any polynomial, as well as how to check our answer quickly for greater accuracy. In addition to this, we look at the application of multiplying polynomials to solve everyday math multiplication. This is an essential component of algebra. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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This looks at how to do simple addition in maths.
No tricks, no fuss.
This is one of the most basic things in maths - yet as a senior level maths teacher I am astounded how many people lack this ability - and as such they struggle throughout their school years at maths.
Addition, subtraction, division and multiplication - these are the most important thing anyone should know in maths , yet a large number of people who still are yet to attain this skill!
Practice this lesson! To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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multiplication and division To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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It is easy to convert metric lengths - from kilometres to metres to centimtres to millimetres. Learn how to do this instantly. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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This shows how to work out the area of composite rectangular shapes. Hooray! To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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How to square any numbers in your head - fast mental math trick here: https://www.youtube.com/watch?v=GEuyDHMG0jY

There is barely any calculation needed to mentally find the square a number that ends in five. How fast? The square of 45 is 1225; The square of 85 is 7225; the square of 115 is 12125; the square of 1095 is 1188125....as fast as I can type them I answer them!
The trick is this to faster squaring....
Say we have 65 squared. Get the number that is not 5 ( that is 6) and multiply it by the next number after it (7). Then just write 25 on the end.
So 6 x 7 = 42, our answer is 4225. Really. Simple 'eh?

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