Subtracting Fractions with different denominators can be done mentally both accurately and rapidly using this cool math trick. The way to minus fractions is slightly different to the adding fractions trick. Become a genius in no time!

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The Law of Sines (also known as the Sine Rule) is a method for working out the angle or side length in a non right angled triangle.
Trigonometry lessons from the mathiest math channel - the tecmath channel!

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Learn how you can square large numbers in your head - instantly! This easy to learn technique will have you calculating the square of numbers up to 100 - without the need for a calculator.
The trick is easy - first we find the distance from the number being squared to the nearest tens number. Say for example we are trying to find the square of 23 - the nearest tens number is 20, which is 3 away from 23. So 3 is our result!
We use this number to find the square - by taking this number from the number being squared (23 - 3 = 20) and then adding this number to the number being squared (23 + 3 = 26). We easily multiply these two numbers (20 x 26 = 520).
To this we add our distance number squared (3 x 3 = 9). So we add 9 to 520...our answer is 529.
Love the math!
The old math is dead! Long live the math!

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Simultaneous equations are where we work with two algebreic equations to solve unknowm variables.

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How Many Faces, Edges And Vertices Does A Cube Have?
Here we’ll look at how to work out the faces, edges and vertices of a cube.
We’ll start by counting the faces, these are the flat surfaces that make the cube. A cube has 6 faces altogether - all square in shape.
Next we’ll work out how many edges the cube has, which are where two faces meet. A cube has 12 edges.
Next we’ll count the corners of the cube (the corners). Do that and you'll get 8.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to https://www.youtube.com/playli....st?list=PLjbxBzUM6SL

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It is easy to find the greatest common factor using the eucliean method. This is the fastest method of working out greatst common factors short of knowing all the factors for every number!
This method works rapidly even for large numbers and utilises the Euclidean algorithm.

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This fast math trick can be used to mentally work out the main basic trigonometric ratios instantly! With this fast mental math technique you can work out the sin, the cos, and even the tan of the most common angles in no time at all! Become the trigonometry master!

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Basic plan reading.
This lesson lloks at some basic calculations involved - how to work out the position of objects such as a window.
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How to multiply numbers numbers calculating the fast way! Using this method you will be able to multiply any pair of two and three digit numbers with each other quickly and accurately! Become a math genius in no time at all using vedic math!

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Percentages can be done mentally as quickly as you can work out basic multiplication.
Use this trick to work out percentages instantly.

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Short division is the easiest way to do division with big numbers, as well as when you have remainders. This math lesson has lots of examples, including how to treat remainders as either fractions or decimals.


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Five fast and easy math tricks for fast multiplication. Great mental math tricks.

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#fastmathtricks
#mentalmath
#mathtrick

Adding large numbers in your head? No problem - just go left to right using this easy math trick!
Youtube and tecmath has your back - with this, the easiest addition trick ever!
How to instantly add large sets of three digit numbers mentally.
Using this mental math method you will be able to add any number of three digit numbers with each other - faster than a calculator! Become a math genius in no time using this trick!

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Ratios are used to compare different quantities. In this introduction to ratios we will look at what ratios are, how we deal with ratios of different measurement units and that ratios can be simplified.

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Age problems in maths can be solved easily by combining all the information into a single equation and then solving. Lots of examples here too. No trick here - just step by step on how to solve.

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Simultaneous equations three variables using elimination - easy - eliminate down from three equations with three variables, to two equations with two variables...to your answer!

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#simultaneousequations
#eliminationmethod

Simplifying ratios involving fractions

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https://www.youtube.com/playli....st?list=PLjbxBzUM6SL

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#fractions
#fraction
#fractionsmath

Want to work out the percentage of a number?
Want to do percentages in your head?
Want to work out percentages instantly?
This is all about percentages - how to work them out - fast.

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#percentage #percentages

Long Division is easy - just follow these simple steps.
1. Divide
2. Multiply
3. Subtract
4. Bring Down
That's it.
No fuss. No worries. Math made easy.


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Combinations are easy to work out and understand using the right method. Combinations differ from permutations in that with combinations order does not matter....so take this into account and the answer is easy.
Part of the permutations and combinations playlist: https://www.youtube.com/playli....st?list=PLjbxBzUM6SL

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