Mathcast: How to do Lattice Multiplication

A mathcast done by our 5th grade class in Detroit,Michigan, USA on AN alternative way to doing multiplication. Checkout http://classofambrose.blogspot.com for more

Duration : 0:3:42


[youtube 1M2L0LJ6PFE]

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8 Responses to “Mathcast: How to do Lattice Multiplication”

  1. athcom51 Says:

    i learned that in …
    i learned that in like 2nd grade

  2. rozzy42 Says:

    thanks so much! now …
    thanks so much! now i got an A for multiplicaton THANK U!!!!!!!

  3. lagging199527 Says:

    i use this everyday …
    i use this everyday i used it since 3rd grade i cant do other one dont be ignorant

  4. billandandy Says:

    You expect a 5th …
    You expect a 5th grader to do computations as quickly as your company accountant (by WHATEVER method)? Wow. You are a harsh task-master. Is your company accountant describing every step as (s)he does the computations? No. Then of course there’s another reason (s)he can do it faster. Oh. Wait. Your company accountant is probably using a computer or calculator. Perhaps a slide rule or abacus at the least? ;)

  5. youutubeleader Says:

    its okay… its …
    its okay… its good if it use by our compnay accountant, then we will take our salery 50 years late :)…………
    however its a good work and thanks for posting it

  6. pinkbyfloyd Says:

    its retarded, who …
    its retarded, who would use that

  7. spiderwick49 Says:

    this is so hard can …
    this is so hard can somebody help me with this in school im in 4th grade

  8. baxterrani Says:

    Nice job! :)
    Nice job! :)

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