This mental multiplication math trick uses the idea of a third number - a base number - to help us multiply two numbers in your head. This series of videos first looks at multiplying numbers near 10 using base 10. The second video looks at multiplying using base 20 and 30. The third video looks at how to apply this mental multiplication trick to numbers near 50. The forth video the investigates ho to easilt mentally multiply numbers near to 100. Continue your mental math multiplication abilties here!

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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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Working out percentage discounts is easy, just use one or two of the tricks suggested in this math lesson.
To work out the discount subtract from one hundred percent, then use a mental break up technique to calculate the percentage discount. 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 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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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.

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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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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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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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