Mental calculators

Mental Calculation World Cup

The Mental Calculation World Cup (German: Weltmeisterschaften im Kopfrechnen, or World Championship in Mental Calculation) is an international competition for mental calculators, held every two years in Germany. (Wikipedia).

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Visualizing decimal numbers and their arithmetic 67 | Arithmetic and Geometry Math Foundations

This video gives a precise definition of a decimal number as a special kind of rational number; one for which there is an expression a/b where a and b are integers, with b a power of ten. For such a number we can extend the Hindu-Arabic notation for integers by introducing the decimal form

From playlist Math Foundations

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What are Rational Numbers? | Number System Concept | Don't Memorise

Watch this video to know more about Rational Numbers, Irrational Numbers, Real Numbers and Number System To learn more about Real Numbers, enroll in our full course now: https://infinitylearn.com/microcourses?utm_source=youtube&utm_medium=Soical&utm_campaign=DM&utm_content=SQ4cB9yXkHM&utm

From playlist Middle School Arithmetic (Part 3)

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What are Irrational Numbers? | Number System | Don't Memorise

Watch this video to know more about Rational numbers, Irrational Numbers, Real Numbers and Number System. To learn more about Irrational Numbers, enroll in our full course now: https://infinitylearn.com/microcourses?utm_source=youtube&utm_medium=Soical&utm_campaign=DM&utm_content=CtRtXoT_

From playlist Irrational Numbers

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What are rational numbers in Physics

Here's a question : what are rational numbers (ℚ) in physics? A pointless question, indeed, but a beautiful one nonetheless... Things to check out: ⊛ Technical notes on this video : https://sites.google.com/view/pointlessquestions/bonus-content/what-are-%E2%84%9A-in-physics ⊛ 3b1b, Appro

From playlist Summer of Math Exposition 2 videos

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Math Problem From Marvel's Agents Of S.H.I.E.L.D.

Can one of the characters prove she is invincible and cannot die? Let's calculate the odds of surviving such an experiment. Source https://math.stackexchange.com/questions/2780138/there-are-4-cups-of-liquid-three-are-water-and-one-is-poison-if-you-were-to-dr Subscribe: https://www.youtub

From playlist Statistics And Probability

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Water and Wine

This course is on Lemma: http://lem.ma Lemma looking for developers: http://lem.ma/jobs Other than http://lem.ma, I recommend Strang http://bit.ly/StrangYT, Gelfand http://bit.ly/GelfandYT, and my short book of essays http://bit.ly/HALAYT Questions and comments below will be prompt

From playlist Problems, Paradoxes, and Sophisms

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Determine the product of two very large numbers by converting to scientific notation

👉 Learn how to multiply numbers written in scientific notations. Scientific notation is a convenient way of writing very large or very small numbers. A number written in scientific notation is of the form a * 10^n where a is the first non-zero number between 1 and 10, (1 included) and n is

From playlist Scientific Notation

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Ex: Determine a Number that is Less Than and Greater than Using a Specific Place Value

This video provides examples of how to find a number that is less than and greater than a given number using a specific place value. Search Video Library at http://www.mathispower4u.wordpress.com

From playlist Whole Numbers: Place Value and Writing Numbers

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P-values Broke Scientific Statistics—Can We Fix Them?

A little over a decade ago, a neuroscientist found "significant activation" in the neural tissue of a dead fish. While it didn't prove the existence of zombie fish, it did point out a huge statistical problem. Hosted by: Olivia Gordon SciShow has a spinoff podcast! It's called SciShow Ta

From playlist Uploads

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Determine the product of two numbers in scientific notation

👉 Learn how to multiply numbers written in scientific notations. Scientific notation is a convenient way of writing very large or very small numbers. A number written in scientific notation is of the form a * 10^n where a is the first non-zero number between 1 and 10, (1 included) and n is

From playlist Scientific Notation

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Lecture 3.3: Alia Martin - Developing an Understanding of Communication

MIT RES.9-003 Brains, Minds and Machines Summer Course, Summer 2015 View the complete course: https://ocw.mit.edu/RES-9-003SU15 Instructor: Alia Martin Infant development of understanding speech as communicative action with information transfer, reasoning about information access and sour

From playlist MIT RES.9-003 Brains, Minds and Machines Summer Course, Summer 2015

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Dividing two numbers in scientific notation

👉 Learn how to divide numbers written in scientific notations. Scientific notation is a convenient way of writing very large or very small numbers. A number written in scientific notation is of the form a * 10^n where a is the first non-zero number between 1 and 10, (1 included) and n is t

From playlist Scientific Notation

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The Problem of Self-Knowledge

A talk given by Barry Smith a few years back on the nature of self-knowledge (i.e. knowledge of one's own inner states of mind) and some of the philosophical problems that arise. He discusses some of the main metaphysical and epistemological issues, especially in relation to knowledge of o

From playlist Philosophy of Mind

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What Is Statistics: Crash Course Statistics #1

Welcome to Crash Course Statistics! In this series we're going to take a look at the important role statistics play in our everyday lives, because statistics are everywhere! Statistics help us better understand the world and make decisions from what you'll wear tomorrow to government polic

From playlist Back to School - Expanded

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Michio Kaku: 3 mind-blowing predictions about the future | Big Think

Michio Kaku: 3 mind-blowing predictions about the future Watch the newest video from Big Think: https://bigth.ink/NewVideo Learn skills from the world's top minds at Big Think+: https://bigthink.com/plus/ ----------------------------------------------------------------------------------

From playlist Space & physics

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What Are Numbers? Philosophy of Mathematics (Elucidations)

What is mathematics about and how do we acquire mathematical knowledge? Mathematics seems to be about numbers, but what exactly are numbers? Are numbers and other mathematical objects something discovered or invented? Daniel Sutherland discusses some of these issues in the philosophy of ma

From playlist Logic & Philosophy of Mathematics

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Overview of equation solving tools notebooks

I talk over the different ways of solving equations in Python using SymPy and SciPy

From playlist Simulation

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Determine Rational or Irrational Numbers (Square Roots and Decimals Only)

This video explains how to determine if a given number is rational or irrational.

From playlist Functions

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BST 320: Section 1, Lecture 12- Mark IV

About Pilgrim Theological Seminary: Welcome to Pilgrim Theological Seminary. Our mission is to provide high quality, affordable, and easily accessible theological education to those who live in or visit coastal South Carolina and to people around the world through our distance education pr

From playlist Pilgrim Seminary: BST 320 -- The Gospels and Acts

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Mental calculation | Mental calculator