Added: 3 years ago
From: mathacademy
Views: 14,382
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  • HEY I TRIED 25*25 AND 77*45 TOO AND IT DIDN'T WORK. WHY?

  • @EbuniMisses 25x25=625 no need calculator for that.

    But okay

    what method did you use?

  • yeah your right it doesnt work, i think it doesnt work at all above 19

    and again dont try the second method

  • the first trick doesn't work for 25*25...does it?

    din't try the 2nd trick though

  • this dosent work for 77x45 fail

  • The most interesting video I've ever seen or listened to.

  • This might seem like a silly Q, but y'know, on the second method, where you drew the horiz & vert lines, how exactly do I know where to draw the diagonal lines?

  • Comment removed

  • In the States, don't they let you use calculators? Do they not let you use them on the SATs?

  • These are the kind of videos that I like to watch where I can actually learn something. Way to go!!!!!

  • Awesome tricks...I will try these with my students!

  • does not work with zeros like 100 x 324

  • WOW THIS MIGHT HELP ME CUZ I ALWAYS GTE C's D's and Like Some R's

  • can be any 2 digits number. doesn't have to be in the tens... if you know how to do it, will be pretty fast also!

  • I enjoyed it muchos!

  • thank you for this great video

    keep posting

    thanks again

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