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Multiply by drawing lines!
This might be vedic math from India.
Maybe from Japan.
Who knows - let me know in the comments!
This is a great visual way of seeing multiplication - and because it does not use any multiplication tables, it makes it accessible to all learners.

See more great math tricks here: https://www.youtube.com/user/tecmath

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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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This tutorial looks at how to quickly and easily do long division using Vedic Math.
Learn to calculate long division as quickly as a calculator, without needing the guesswork often assosiated with standard long division.
This video is the third of four videos looking at this ingenious method.

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If Teresa’s daughter is my daughter’s mother, what am I to Teresa?
This video looks at the answer to the Teresa's Daughter puzzle, as well as these similar ones...

A man is looking at a picture of a man on the wall and states,
“Brothers and sisters I have none, but this man’s father is my father’s son.”
Who is the man in the picture in relation to the man looking at the picture?

I am your mother’s brother’s only brother-in-law. Who am I?

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#mathproblems
#mathriddles
#mathsforfun

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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Algebra is where we substitute a letter (called a pronumeral) to make equations (and even maybe solve them). Algebra isn't hard - if you know the basics. This math lesson looks all at the basics of algebra.

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Long division is easy - really it is just short division but looks harder.
It involved several steps - there is no getting away from these - trust me I have searched fr a faster easier method!
Watch th is lesson and learn to divide by 2-digit numbers.

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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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https://www.patreon.com/tecmath To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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The 3,4,5 triangle uses fairly simple math which can be used for all sorts of things. And yep it is Pythagoras but don't let that scare you...

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How do you solve conditional probability examples?
What is the probability of an event A given that event B has occurred?
This is conditional probability, solved by the formula that P(A|B) which reads "probability of A given B" is equal to the P(A intersect B)/P(B).
Three examples are examined.


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Conditional Probability Formula: P(A|B) = P(A and B)/P(B)

We look at the trigonometric functions: sine, cosine, and tangent used to work out sides and angles in right angle triangles.
You will learn the following steps -
1. Labelling the sides - opposite, adjacent and hypotenuse,
2. Determining which trig function should be used - SOHCAHTOA - (sin = opposite / hypotenuse,
cos = adjacent / hypotenuse, tan = opposite / hypotenuse)
3. Substitution of values.
4. Calculation.
By going though all the trigonomic functions this video will help you master this topic - through the use of a few math tricks! 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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Being able to add two numbers quickly is an important maths skill.
This lesson shows how to add quickly in your head, from left to right (the way you would say the answer), through carrying numbers forward.
Mental computation - practice it - especially addition, as this is the most common use of maths used in society.

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This trick goes on beyond the simple elevens times table pattern you probably already know - WAYYYY beyond! You can easily work out ANY elevens times tables question - instantly!

Well done you!

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To go to the decimals playlist follow this link:
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL

Adding decimals is easy - just make sure all of the place values (especially the decimal place) line up. Through the information in this math lesson, and practice you will soon be adding decimals easily. 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 spped distance and time calculations easily.
This shows an easy was to remember all the formulas so you'll be calculating velocity problems no problem!

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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Follow the basics and it's easy to multiply matrices.
Start off easy with orders - rows and columns and from there you'll be adding, subtracting and multiplying matrices.


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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 side lengths 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.

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How Many Faces, Edges And Vertices Does A Octagonal Prism Have?
Here we’ll look at how to work out the faces, edges of vertices of an octagonal prism.
We’ll start by counting the faces, these are the flat surfaces that make the 3D shape. An octagonal prism has 10 faces altogether - 2 octagonal faces, as well as 8 rectangular faces.
Next we’ll work out how many edges the shape has, which are where two faces meet. An octagonal prism has 24 edges.
Next we’ll count the corners of the shape(the corners). Get counting! An octagonal prism has 160 vertices.

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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Calculate the cube of any number between 1 and 100 fast

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