personally the lattice method of multiplication is the reason i hate math
youre telling me that i can make some boxes with lines through them
solve the multiplication equation for each pair of individual digits and arrange them in the boxes just so
AND THEN ADD UP ALL THE NUMBERS IN EACH COLUMN AND GET THE RIGHT ANSWER????
this post taught me that not everyone learned the lattice method in elementary school
In grade school we learned the normal way to do multiplication one day and then the lattice way the next, except I was sick the day we learned the normal way and they never went back and reviewed it and neither did I and so to this day I only know how to use the lattice method
....What the ever loving fuck, this is really cool???? I have NEVER heard of this???
I swear the jump from the first to the second image is basically that "draw the owl" meme.
Yeah it took me a while to figure it out, but I DID! So for me and you and everyone else going “wait wtf just happened????” I present a more step by step breakdown!
So you start with a grid with as many squares as needed to write one number across the top and one number down the side. And draw these diagonal lines through them. Yes you should extend them out the side.
THEN you basically multiply the numbers that match with each square, put the tens digit in the top triangle and the ones digit in the bottom triangle. Like so:
so once you’ve done that, you start adding up the numbers in the DIAGONAL column/row thingies from the bottom right up to the top left, like so:
You only want one digit (tho I assume if the very top/last row somehow gets 2 digits that’s ok, but ONLY in that position) and you’ll carry over to the next column, like if you were adding normally.
Then you start at the top left and just take all the numbers going down and around and put them together!
It does take up a lot more space and has a few more steps than the more traditional long multiplication, I think, but for people who struggle with that I think this would be a handy tool!
Here’s a screenshot of the more traditional style to compare:
I hope this helps! I had to figure it out on my own bc I was never taught this either. :)
Huh. I'll be damned. Reblogging so I'll hopefully remember how to do it.
I learned this way in school and switched to a school that taught the traditional way the next year and all the kids thought I was a witch
