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TOPIC: Multiplying Numbers
Englandude
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Posts: 58
Date:
Mar 29, 2007
Multiplying Numbers
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Is there an easy way to multiply numbers like...
124 * 312
211 * 112
These take a lot of time so i skip them but i need all the points i can get. Can someone please tell me an efficient and easy way to multiply like this.
Thanks.
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400s everytime i take a test.
bradp
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Posts: 142
Date:
Mar 29, 2007
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abc
def
the first digit is c*f
second: b*f + e*c
third: d*c + a*f + b*e
fourth b*d + a*e
fifth: d*a
basically, multiply the first column, an x, a bigger x, another small x, and the last column
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