I think a lot of 10%ers could learn to do wedding-cake multiplication, if sufficiently well-paid as adults rather than being tortured in school, out to 6 digits
What is wedding-cake multiplication? A quick google just turned up a lot of people who want to sell me wedding cakes...
Late response but I figure people will continue to read these posts over time: Wedding-cake multiplication is the way they teach multiplication in elementary school. i.e, to multiply 706 x 265, you do 706 x 5, then 706 x 60, then 706 x 200 and add all the results together. I imagine it is called that because the result is tiered like a wedding cake.
What is wedding-cake multiplication? A quick google just turned up a lot of people who want to sell me wedding cakes...
It’s a name for the usual algorithm for multiplying multi-digit numbers with pencil-and-paper. (Contrast to, e.g., the grid method.)
It may be the usual algorithm, but it’s not the usual name for it!
Late response but I figure people will continue to read these posts over time: Wedding-cake multiplication is the way they teach multiplication in elementary school. i.e, to multiply 706 x 265, you do 706 x 5, then 706 x 60, then 706 x 200 and add all the results together. I imagine it is called that because the result is tiered like a wedding cake.