Vedic Mathematics Multiply by 9 Trick 2

Key Takeaways

either promise you today I'm back with my put to video of multiplication by nines and I'm sure you do not want to miss this because you will learn in a meeting strategy on how to solve some really tricky math problems so stay tuned I'll be right back [Music] welcome back on MP station so how about you recapping what we did in our previous video what we did is we multiplied this same amount of digits for the same number of nights for example we did 28 multiplies by double nine and our first step would be we have to subtract 28 minus one and that would be 27 and then our second step is we have to apply the rule which is we have to subtract Mercer online and the last from 10 so 9 minus 2 would be 7 and 10 minus 8 would be 2 and this is our product 2772 how do we do another one how do we do 509 multiplied by a triple 9 so first we have to do 509 minus 1 and that would be 508 and then we would have to do apply the rule and that would be 9 minus 5 and that would be 4 9-0 99 and 10 minus 9 and that would be 1 so this is our product five hundred eight thousand four hundred and ninety one so this is what we did in our previous video so today we're going to learn how to like multiply like a three-digit number multiplied by four nines or a four-digit number multiplied by 39 so let's get right into it so now we have four problems here and their first one is to do 25 multiplied by trip line and our first step is is we have to equalize the number of digits to the number of lines so that's pretty simple all we have to do is add a zero right in front of 25 so now step two is pretty simple too all you have to do is near the same steps as check number one so that would be to subtract 25 minus 1 and that would be 24 and then now we have to apply the rule which is subtracting a from 9 in the classroom 10 so I'm gonna 0 that is 9 9 minus 2 that is 7 and 10 minus 5 and that is 5 so this is our product to top 20 4975 and that's pretty simple so our next step our next problem is to do 438 x double 9 double nine so our first step is we have to equalize the number of digits to the number of nines so let's add that zero and now we have to do the same on the step size trick number one so let we're gonna do 438 minus 1 and that would be 437 and then we have to do all four mine and the last from 10 so 9 minus 0 that is 9 9 minus 4 that is 5 9 minus 3 which is 6 and last one from 10 which is 10 minus 8 and that is 2 and guess what this is our product and which is 4 3 7 9 5 6 till from these your problems we have to multiply a bigger number of digits by a little amount of 9th the first one has to do 284 x 899 the first step is we have to identify which base is closest to the number of runs which star would be 100 so in 100 there are two zeros so what we have to do is add two zeros after 284 just like so another two zeros now we have to subtract 200 284 from this number so I'm gonna write it just below and now let's go into subtracting so let's do 10 10 minus 4 and that's 6 and 9 minus 8 and that's 1 3 minus 2 which is 1 it remains the same and 2 remains the same and this is our product 28,000 116 sir last problem in today's video is to do 672 times 99 so our first step is is we have to identify which base is closer to that number of 9 and this problem it is the same as this one which is 100 so now we have to add two zeros after 672 so it's ready like this so we either the two zeros now we have to subtract 6 and just go from there summer just like so so let's subtract now and now we're going to do 10 minus 2 which is 8 and 9 minus 7 which is 2 and then 11 minus 6 which is 5 and 6 minus 0 which is 6 and 6 minus 0 which is 6 and this is our product and it is 66,000 528 and I'm um so what we did in these last two problems is we converted a multiplication problem into a subtraction problem and isn't that so cool and I'm sure that subtraction is already easier than multiplication for at all of us here so I'm um I really recommend you guys to use this strategy if you want to solve every number of digits multiplied by 9 we it is a much more quicker than the traditional way I hope you guys enjoy this math video and please stay tuned on MP station for a next upcoming video of some more Matt tricks and you have if you have not subscribed to my channel yet put your subscibe to my channel and like my videos and share with all of your friends and have a good weekend [Music]