Casting out nines is a fast and easy method of making sure your math addition calculations are correct. This trick involves adding the digits of each number and reducing each to a single digit, then comparing the end result with the answer. 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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Surface area is where we work out the area of a 3D object such as a rectangular prism. In this video we work out surface area of a real life example. 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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Ratios and proportions, scaling up and down, currency conversions...even percentages - these are easy to do using this easy to apply method.


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The least common multiple (aka the lowest common multiplier LCM) is easy to work out - just use this simple method. Is this the fastest way? Like many things in math that depends on the problem being solved!
This video lesson looks at solving the LCM for less complex numbers. 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 is the fastest way to convert kilograms (kg) to pounds (lb), and then in trun to convert pounds to kilograms.
In this video we will look at how many pounds in a kilogram, and using this idea we will use a fast math trick to convert between the two.

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#convertingmeasurements
#convertingunits
#metric

It is easy to mentally work with fractions - just follow a few simple tricks!

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Simplifying Square Roots - this is a really easy math lesson when working on surds or radicals. Just work with perfect squares! 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 amazing math trick can be used to multiply two digit numbers instantly.
It is important to remember that for this particular multiplcation trick that it is just that - it is very specific and has a few conditions which must be met in order for it to work. First the first numbers must add up to ten, and secondly the last numbers must be the same....so very limited, but cool nonetheless!

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Multiplying Decimals is easy
To multiply decimals, first multiply as if there is no decimal. Next, count the number of digits after the decimal in each factor. Finally, put the same number of digits behind the decimal in the product.
#decimals #decimalmultiplication #howtomultiplydecimals


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we are geelong the greatest team of all
we are geelong we're always on the ball 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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Coronavirus is here. The numbers are terrifying.
The number of cases worldwide doubles every four days.
We'll be at a million cases within two weeks.
The fatality rate of coronavirus is from 1 to 3.4% It requires hospitalisation in 19% of cases.
And we fiddle whilst Rome burns. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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This math problem is the meaning of life. Can you solve it in less than 30 seconds?

You will have to use geometry and all the information on the diagram - and like all good matht problems on Youtube I will go through how to work out the answer.

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For the playlist of math problems:
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#mathproblems
#mathriddles
#mathsforfun

Calculate the cube root of any perfect cube whose cube root falls between 1 and 100, in 2 seconds using vedic maths. This cube root trick makes math easy!

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ome people may find these easy - others not - but it is essential if you want to easily mentally multiply bigger numbers that you first master this.

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Here is THE mental multiplication lesson playlist - progressing you through your mental multiplication.
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL

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I use this method in math sometimes when I'm not certain how to proceed! Is it a trick? Probably not - but I use it lots in trigonometry and formula.
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We can measure Angles in Degrees. There are 360 degrees in one Full Rotation (one complete circle around). In this lesson we learn how to measure the size of an angle, and how to contruct angles using a protractor.

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In this Introduction to Probability we will look at basic probability, the probability formula and tree diagrams. Every chance you'll be OK.


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This simple math trick can be used to multiply any number by 5, 25 or 125 easily (and instantly!).

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Casting out nines is a fast and easy method of making sure your math division calculations are correct. This trick is fast, easy, and accurate! 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 of Fractions is easy - the trick is to know that you must invert (flip) the divisor (number being divided) - then multiply the fraction out. You will soon be able to divide any fraction with this fast math lesson.

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The Order of operations is the order in which you should do a maths equations. You've probably heard it called BODMAS or PEDMAS...even BIDMAS or PIDMAS....it's all the same thing!
First do anything in brackets (also called parenthesis). Second, do any orders (these are squared, cubed, square root and the like). Any multiplication or divide come next, and finally do any addition or subtraction...left to right. 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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#fastmathtricks
#mentalmath
#mathtrick Using algebra it can be proven that 2=1.
Use this math trick to fool your teacher, trick your friends or possibly end the universe.
Warning: do not try to do this in an enclosed space. To support free math on Patreon (thank you): https://www.patreon.com/tecmath 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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Ratios, rates, percentages, currency conversion, speed...all easy and accurately done.

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This video looks at the way to easily work out percentages. This is an essential part of math.

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To go to the fractions playlist follow this link:
http://www.youtube.com/watch?v=do_IbHId2Os

In this math lesson, we learn to use division to convert fractions into their decimal form. This video uses the rapid short division method, where we simply divide the denominator into the numerator (top divided by bottom).

This math video lesson also looks at recurring and non recurring decimals that can result from calculating fractions.

It is also a similar method we use to convert fractions to decimals and then percentages - to do this we convert the fraction to the decimal as explained, then we multiply by 100 to change to a percentage.

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