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Peasant Multiplication

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1Peasant Multiplication Empty Peasant Multiplication on 3/26/2019, 3:42 pm


Admin & Writer
Peasant multiplication is rather simple. It is halving and doubling values on the left and right, respectively, of a continuous list from the starting values (being multiplied) until you get to 1.

These pictures, taken from Wikipedia, should prove resourceful to learning peasant multiplication.

Peasant Multiplication Screen11

But as an example, I will do one for show.  Smile

Equation is written at top. Values in left column are halved; with decimal placements removed and rounded to the lower number. Right column values are doubled. Do this until you get to 1.

Does not apply but worth noting for any future reference for math equations: Any odd should turn even, and any even should remain the same. No need to worry about anything to do with decimal placement when doubling.  Wink

35 * 21
17    42
8      84
4      168
2      336
1      672

Scratch out right column value if left column counterpart is an even number.
Values from right column that are not scratched out are added: 21 + 42 + 672 = 735

Punch equation into your calculator, and you will see 35 * 21, is indeed 735.

Easy, right?  Smile

Peasant Multiplication Simple10

2Peasant Multiplication Empty Re: Peasant Multiplication on 4/8/2019, 6:10 pm


Mod & Writer

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