Multiply big numbers in your head!
And it's easy champions!

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Percentages, fractions and decimals are essential for high school maths students - yet a lot of students need extra help on these.
It is first of all important to realise that percentage, fractions and decimals are essentially describing the same thing - that is - they are describing a part of an amount.
Percentages describe part of an amount out of 100 - an easy way to think of this is if you think of cents in the dollar - e.g. 25% is like having 25 cents out of a dollar.
Fractions describe parts by telling us how many parts an object is out of another - for example - you have a pizza - cut it into 8 parts and eat 3 bits - thats 3/8 parts are eaten.
What is very important to understand with fractions is that they are written so that the top number is dividing the bottom number. 1/4 means 1 divided by 4, which equals 0.25 (decimal) or 25% percentage.
Decimals decribe a part of a number out of 1. For example 0.5 is 0.5 out of 1 or 1/2 or 50%....
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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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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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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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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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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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Okay, you've got me - this is Pythagorus' theorum....
Really easy though!
In a right angled triangle the square of the two smaller sides added together is the same as the square of the diagonal.

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In this video we look at how to use completing the square to solve quadratic equations using an easy example.

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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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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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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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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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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 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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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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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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In this video we look at how to multiply any two digit number by eleven instantly - much faster than any calculator! Multiplication has never been so fast and easy with this Vedic Maths Trick! Fast Mental Math Tricks and times tables - you've got to love them! In addition, we'll look why this trick works, as well as tips to do it mentally. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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