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13x15=1815 Doesn’t work dislike it
I see why it worked on numbers below 20, you have to cross multiply by 1 to get the *2+4* part. But if it's a number other than 1, say, let's solve 23 × 27. 2×2=4, 3×2=6, 2×7=14, 6+14=20, 3×7=21 4 20 +21 621 Now, try the trick yourself and see what I mean.
19x27=??? 423 wrong answer. BS. The answer is 513. Does not out 4 all math problems
Just do: 12x10 12x4 Add them up
Unbelievable
Works only on certain numbers
13x25=1815
I’m gonna try using this and see if it works. I’m also going to ask my Chinese friend if that’s how he does it
Bhai made in China's 😢😂
Just to the indian method mam 😅😅
you can also use the vedic math approaches
13x68 doesn't work either. I really wish posts like this would be forced to be deleted for falsifying information.
Doesn’t work for many numbers
That’s Pretty smart 🧠 😊
just do the regular multiplication algorithm at this point it kind of is just the regular algorithm, but expanded
Do 12*7 = 84 Double it, 84*2 = 168 Similarly 13*18 = 13*9*2 = 234
?????
😊😊
47x92. 36914
23x27=120 wtf not work