This educational video tutorial will show you how to compute mathematical problems in your head. You will see some techniques to do some maths problems in your mind. Learn to do algebraic computations in the head without having to look at a calculator. Become a human calculator!
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How To: Find the Percent Given Two Numbers

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How To: Find a number given Its percent

How To: Remember "greater than" & "less than" symbols

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find Leg Lengths and Hypotenuse of a 45 45 90 Triangle

How To: Find a missing side of a triangle, similar to another

How To: Convert Fahrenheit to Celsius with a formula

How To: Divide exponents with the quotient rule

How To: Find the area of a parallelogram using geometry

How To: Divide small numbers by big numbers

How To: Find the area & perimeter of triangles & squares

How To: Calculate percent composition for chemistry

How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator

How To: Find the formula of a piecewise function given a graph

How To: Find the Slope Given 2 Ordered Pairs

How To: Determine the age of a fossil using carbon14

How To: Isolate a variable

How To: Find a missing angle outside of a triangle

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