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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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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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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Adding and Subtracting Fractions with the Same Denominator.


This video is part of a playlist:
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL


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#fractions
#fraction
#fractionsmath

This maths trick for fast multiplication allows you multiply any two numbers quickly, using vedic math. This method is a great alternative either for those who need that extra bit of help with math, or people who like to expand their knowledge.
This trick is especially useful in multiplying large numbers, with less mess and confusion than standard long multiplication.

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How to convert between binary and decimal easily.

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#convertbinary
#binary
#binarydecimal

In the video lesson, you will learn how to convert a number from standard notation to scientific notation by moving the decimal place. By doing this really big numbers and really small numbers can be easily described.
e.g to write 470,000 in scientific notation, write the number 4.7, (so that there is only one digit to the left of the decimal point), then count the number of places that the decimal point must be moved to get back to 470000 ( in this case is 5). If the number is big it is a positive exponent (like this one - which we'd write as 4.7 x 10^5).
A little number - like 0.0000033 gives a negative exponent (in this case 3.3 x 10^-6).
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These probability tricks will help you easily and quickly sort out those more difficult probability questions in no time. Through the use of the combination formula (which I'll briefly explain) you'll smash those probability questions fast!

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This easy visual proof shows that the area of a circle is πr2.


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Sequences and series...what are the next numbers in the following pattern?
You'll be fine. Just follow these tips and tricks.

Calculating the tip is not hard. Just use these basic mental percentage strategies and you'll be all good.
And yes. We generally don't tip in Australia! But in some countries it's how wages are paid - and I reckon if that's the case you've gotta pay people fairly for thier job!

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Work out the area of a circle by using pi (3.1415) and the radius (half the width or diameter of the circle) - so that Area - Pi x radius x radius.
We then work out perimeter of circles using pi and radius - so that circumference = 2 x Pi x radius.
Finaly we look at the volume of cylinders - which is the area of the circle x the height (or Pi x Radius x Radius x height).

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How do you multiply any two numbers in your head?
There are three main methods mathemagicians use - this is the mot commonly used one - the addition method.
Hope you like it!

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

Here is that link how to multiply questions like 3 x 54 instantly
https://youtu.be/yZULgerBRms

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How to work out IV rates. This part of a series looking at math calculations used by nurses. T

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Basic working out of wages involving flat rates of pay, and overtime.
Also shown is how to fill in a timesheet, and work out pay from a timesheet. 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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To go to the fractions, decimal and percent playlist follow this link:
http://www.youtube.com/watch?v=do_IbHId2Os

Some decimals are easy to convert to fractions - you just put the decimal over a suitable multiple of ten - and then simplify from there. To do the more complex decimal to fraction conversions there is a trick, which involves some very easy algebra. Learn how to do this and you will be able to convert any decimal to a fraction.

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Exponent notation (also called index notation) is a shorthand way of writing repeated multiplication. The base is the number that is being multiplied and the exponent (index) is the number of time it is multiplied.

For the playlist of indicies and prime numbers.
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL

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It is easy to avoid borrowing when you are subtracting if you minus by pairs of digits rather than individually. Use this method to do lightening fast subtraction calculations with no problem! In this fast and easy math lesson you will learn this pretty obvious trick, and be subtracting faster than ever before!

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You can subtract these sorts of questions easily and in you head in under 3 seconds. Seriously. You'll smash it.
Just remember...youtube and tecmath has your back - with this, the easiest subtraction trick you were EVER taught in school!
Numbers with zeros.

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How to work out your income tax using the ATO tax table. 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 math it can be proven that 2+2=5....although obviously there is a lie in there.
Use this math trick to fool your teacher, trick your friends or possibly get in an argument. Better yet learn how to avoid making these mistakes in your own reasoning.
Warning: anger will ensue.

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Dividing by multiples of 10 is simple to do.
First count the number of zeros in the number you are dividing by, then move the decimal place of the number being divided the same number of times.
Because we are dividing by numbers ten and above the answer is going to be smaller, and so the decimal place moves to the left. 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 algebra lesson looks at how to easily expand binomial expressions in brackets and simplify the result. Another easy math lesson.

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#fastmathtricks
#mentalmath
#mathtrick This math trick is pretty easy to do, and can be done in your head faster than a calculator.
This trick only works when multiplying numbers that both end in five. A couple of simple steps and you're done!
In addition, the mathematical reasons why this trick work are simply explained at the end of the video.

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Area of circles - a math lesson that is fast and easy to understand. Math is awesome! 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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