Math
These are fractions that mean the same amount, but different 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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How to solve Simultaneous Equations by Elimination.
For more examples of how to solve simultaneous equations using the elimination method go here: https://www.youtube.com/playli....st?list=PLjbxBzUM6SL
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This percentage trick is so easy - and you should know it if you are a regular here!
Forgotten it? That's OK...youtube and tecmath has your back - with this, the easiest way to work out percentages of an amount.
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More percentage tricks: https://www.youtube.com/watch?v=8fG9nbVV9g4&list=PLjbxBzUM6SLn7pLTxrksJjlHoLY8aOcGk&index=7
Square numbers are numbers multiplies by themselves. These are written to the power of two.
The opposite of square numbers and square roots.
For the playlist of indicies and prime numbers.
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL
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This trick allows you to work out the surface area almost instantly of ANY rectangular prism (or box). How do you work out the TSA (total surface area) of a box - watch this video and you'll be able to do it instantly!
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This problem will only take 30 seconds...but plenty of people are getting it wrong. Can you get it right first time? To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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#mathproblems
#mathriddles
#mathsforfun
Work out percent problems of an unknown amount with this fast math lesson.
This video shows how to easily solve percentage problems and looks at how to convert percentages to fractions and percentages and fractions to decimals.
This lesson shows two methods for working out the problems -- enabling learners to work with the method that works best for them. These strategies are both easy for students to learn and for teachers to teach -- and give a greater understanding of the relationship between percent, decimals and fractions when describing parts of an amount.
The first method explored uses the fraction of the percent (putting the number out of 100), and then easily and instantly converting this to a decimal. Then using some simple equation juggling we solve the equation to get the answer. This type of method is good for those who can follow simple steps and are capable when shifting around numbers in an equation to get an answer.
Using the second method we look at where we can solve the problem by changing the value to one percent then 100 percent.
This is another video from the tecmath channel made in response to a question from a viewer -- so the other lesson you can learn is this -- if you have any mathematical questions and you need them answered -- then let me know -- I'd be glad to help! Even better if we can find a math trick or two along the way!
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Need to work out the area of a composite shape?
It's easy - just follow these logical easy steps and you'll be solving them no worries!
To do this - follow the steps in this easy math lesson.
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The trick to getting the right answer with volume calculations every time. Be a math genius with mental math. 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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Finding the square of a nmuber is easy - just follow these mental math tricks. You'll be able to calculate squares faster than ever and amaze everyone with your utter genius!
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#fastmathtricks
#mentalmath
#mathtrick
This algebra trick allows you to easily solve where the variable (that letter x) occurs on either side of the equation. In just a few seconds. Snap!
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Factor trees can be used to work out the Greatest Common Factor - which is also called the greatest common divisor, or the highest common factor.
For the playlist of indicies and prime numbers.
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL
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This math problem went viral after being posted in 2020.
Celeste Ng tweeted 'At dinner, nine year old made up a math problem and made his father and me solve it. Our attempt at simultaneous equations got really complicated. We figured it out via guess and check, but I still think there has to be a more elegant way.'
Can you solve the nine year old math problem using both guess and check and the elegant way - using algebra?
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#mathproblems
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More quadratic eqautions through completing the square.
Need the first video? https://www.youtube.com/watch?v=d2LMCiIGnXA
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It is easy to convert work out the area of rectangles and triangles. Just follow the steps in another fascinating math lesson. 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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Invest in yourself! Use my link and check out the first chapter of any course for FREE! https://bit.ly/2LNGEQ4
This video was sponsored by DataCamp.
Autobiographical Numbers - the numbers that describe themselves.
Five digit example 21,200
The first digit describes how many zeros are in the number.
The second digit, how many ones there are in the number.
The third digit, how many twos there are, and so on...
Can you work out the only ten digit autobiographical number?
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This algebra math video tutorial focuses on simplifying exponents (also called indicies) using the five exponent laws.
What's more we look at WHY the laws work - so you will remember them!
Plenty of examples.
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Rule of 72. This method lets you compound interest calculations in your head to find an the time taken for an investment to double. 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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Checkout geeklyEDU at https://www.youtube.com/c/GeeklyEDU/featured
This long division trick is a simple as connecting the dots, and it's as quick as a flash.
Math is math with tecmath math!
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Prime factorization and factor trees.
Every composite number can be written as a product of powers of prime numbers.
A factor tree shows the prime factors of a composite number.
For the playlist of indicies and prime numbers.
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL
To contribute on Patreon:
https://www.patreon.com/tecmath To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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When rates are expressed as a quantity of 1, such as 2 feet per second or 5 km per hour, they are called unit rates. Use this trick to always get them right! To support free math on Patreon (thank you): https://www.patreon.com/tecmath 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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mm to m! m to km! Easy done.
ml to l! Basic!
mg to g! g to kg! Simple.
Converting measurements in the metric system such as distance, volume or weight is easy. This lesson'll sort it out for you!
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#convertingmeasurements
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How do you put fractions on a number line? This allows you to compare equivalent fractions, and understand what the parts of a fraction mean. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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Multiplying Fractions is simple. .
This video is part of a playlist:
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL
To support tecmath making new math videos on Patreon:
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#fractions
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