What the actual fork have they done to maths?! What the actual fork have they done to maths?!
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    Default What the actual fork have they done to maths?!

    My son is in Year 6 and I think in old money it would be called long division but I have just been shown "the bus stop method" and although it works, it just seems crazy!
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    I have always been rubbish at long division. How does this method work?

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    Looks like it is just long division but skipping the part where you show your workings so relies on better mental arithmetic.

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    Quote Originally Posted by ladymuck View Post
    I have always been rubbish at long division. How does this method work?
    You tap the person in front of you in the queue and ask them to do it...
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    The bus stop method seems to be just long division with carry (or something like that) that I learnt decades ago.

    https://www.twinkl.co.uk/teaching-wiki/bus-stop-method

    This one is popular and new. I was taught it by a trainee teacher last year.

    Japanese multiplication method


    Of the Japanese method I thought well that is interesting and my youngest understood it.
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    According to Twinkl, that method is “short division”:

    Quote Originally Posted by Twinkl
    This method is also known as short division. Once children have mastered this, they can move on to long division.

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    Quote Originally Posted by ladymuck View Post
    I have always been rubbish at long division. How does this method work?
    As explained to me, you find the biggest number that can be divided by the divisor, sub tract that from the total and keep going, so the question we have just done.


    Code:
    8729 / 7
    
    
    subtract 7707 (1101 * 7)
    
    1022
    
    subtract 700 (100 * 7)
    
    322
    
    subtract 210 (30 * 7
    
    122
    
    subtract 70 (10 * 7)
    
    42
    
    subtract 42 (6 * 7)
    
    1101 + 100 + 30 + 10 + 6 = 1247
    Which gives the right answer
    “Live a good life. If there are gods and they are just, then they will not care how devout you have been, but will welcome you based on the virtues you have lived by. If there are gods, but unjust, then you should not want to worship them. If there are no gods, then you will be gone, but will have lived a noble life that will live on in the memories of your loved ones.”

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    I follow the scootie contrarian method of long multiplication.

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    Quote Originally Posted by SimonMac View Post
    As explained to me, you find the biggest number that can be divided by the divisor, sub tract that from the total and keep going, so the question we have just done.


    Code:
    8729 / 7
    
    
    subtract 7707 (1101 * 7)
    
    1022
    
    subtract 700 (100 * 7)
    
    322
    
    subtract 210 (30 * 7
    
    122
    
    subtract 70 (10 * 7)
    
    42
    
    subtract 42 (6 * 7)
    
    1101 + 100 + 30 + 10 + 6 = 1247
    Which gives the right answer
    Interesting .... seems an overly complicated way of doing long division.

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    Quote Originally Posted by SimonMac View Post
    As explained to me, you find the biggest number that can be divided by the divisor, sub tract that from the total and keep going, so the question we have just done.


    Code:
    8729 / 7
    
    
    subtract 7707 (1101 * 7)
    
    1022
    
    subtract 700 (100 * 7)
    
    322
    
    subtract 210 (30 * 7
    
    122
    
    subtract 70 (10 * 7)
    
    42
    
    subtract 42 (6 * 7)
    
    1101 + 100 + 30 + 10 + 6 = 1247
    Which gives the right answer
    That's not long division, just division.

    Long division is 9829 / 71 - or when both numbers in the sum are more than one digit long and usually more (or greater than the highest multiplication table you already know). Same technique though, just takes a bit longer
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