This video demonstrates, without narration, a trick to multiplying large numbers. To do the trick, just draw a diagonal line for every unit in the number and add up the number of times the lines cross.
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How To:
Find the formula of a given sequence
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How To:
Solve equations with fractions and decimals
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How To:
Find the Percent Given Two Numbers
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How To:
Find a missing side of a triangle, similar to another
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How To:
Understand the differences / similarities between squares, rectangles & rhombi
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How To:
Evaluate functions by substituting in the variable to the input given
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Understand basic probability with examples
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Calculate Faster Than a Calculator
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Convert Fahrenheit to Celsius with a formula
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Calculate the area of a parallelogram
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Find the Radius of a Circle from Arc Length
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Find the slope of a line given 2 points with fractions
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Find the area & perimeter of triangles & squares
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Determine the age of a fossil using carbon-14
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Multiply proper & improper fractions
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Find the area of an oblique triangle using formulas
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Derive the area of a circle
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Calculate probability in "at least one" problems
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Find how many toothpicks will be needed to form the nth figure in a sequence
2 Comments
thats all fine and well if you multiply equal ammounts of numbers. now what if they are different, say 569 x 73? it doesnt form the same type of grid and i am lost as to which crossing places you add up.
dont get weird
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