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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Find a slope of a straight line with: Ax + By + C = 0
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Find the area & perimeter of triangles & squares
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Figure out the domain & range of a piecewise function
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Calculate weight if given the mass
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Solve for the missing ratios or proportions
-
How To:
Use ">" (greater than) and "<" (less than) symbols
-
How To:
Calculate Faster Than a Calculator
-
How To:
Calculate the area of a parallelogram
-
How To:
Find a slope of a straight line with: Ax + By + C = 0
-
How To:
Find the slope of a line given 2 points with fractions
-
How To:
Remember "greater than" & "less than" symbols
-
How To:
Find a missing coordinate given: coordinate & equation
-
How To:
Draw a rectangle
-
How To:
Find Leg Lengths and Hypotenuse of a 45 45 90 Triangle
-
How To:
Solve radical equations easily
-
How To:
Find a number given Its percent
-
How To:
Find the area of a triangle when given 2 sides & angle
-
How To:
Convert Fahrenheit to Celsius with a formula
-
How To:
Find the Percent Given Two Numbers
-
How To:
Find the area & perimeter of triangles & squares
-
How To:
Calculate percent composition for chemistry
-
How To:
Prove a triangle inscribed in a circle is right angled
-
How To:
Figure out the domain & range of a piecewise function
-
How To:
Calculate weight if given the mass
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How To:
Solve for the missing ratios or proportions
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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