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Crisscross multiplying 2
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7
 Feb
18

This really won’t save you any work at all but it’s sure to baffle casual onlookers.

At heart is just the usual distributiveWP algorithm we all use when multiplying arabicsWP, rearranged and visually rewritten using the immediate correspondence of crisscrosses to multiplication: .

tagged algorithms, droll, fun, graphs, information design, math, serendipity, tips, videos