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How to calculate money e.g. how much all items cost together and the change? watch

    • Thread Starter
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    Quickly?
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    If you can't do it in your head quickly use a calculator...thought that would be pretty obvious? Unsure why you are confused.
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    (Original post by SophieSmall)
    If you can't do it in your head quickly use a calculator...thought that would be pretty obvious? Unsure why you are confused.
    I Wanna Be Able To Do It In My Head
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    (Original post by Anonbabes)
    I Wanna Be Able To Do It In My Head
    Practice.
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    (Original post by SophieSmall)
    Practice.
    Do u kno any good techniques?
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    (Original post by Anonbabes)
    Do u kno any good techniques?
    Non in particular, just practice.
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    (Original post by Anonbabes)
    Quickly?
    i start working with list of 20 item and worked up to 50 on paper then just converted that to memory now i can add 3, 3-digit numbers in about 10 seconds
    took me 5 years to learn though
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    I tend to round it up which makes it easier. So, if I got a load of items which are 99p, I just round them up to £1 or whatever.
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    Round up then knock off
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    (Original post by Serine Soul)
    Round up then knock off
    Example
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    (Original post by Anonbabes)
    Example
    Say you have three things:
    £4.50, £3.99 and £7.68
    Round them up to £5, £4, £8
    Add up the excess: 83p

    Assume £20 limit: £20 - £17 = £3
    Plus excess: £3.83 in change

    Sounds long winded but works for me when I'm in a rush in Tesco! It's also very useful to know the pairs of numbers which add up to 100.

    Just round up all the time too, that way you'll know for certain if you have enough
    • Very Important Poster
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    When i'm shopping or checking then i dont need to know the correct figure, just an estimate. ts easy to group itsem together and round things off, which normally gets me close to how mych hings will cost. Experience makes you fatser, just as it would if you needed a more accurate count.
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    (Original post by Anonbabes)
    Quickly?
    Practice, practice, practice.
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    Most people are really bad at doing that.
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    (Original post by Serine Soul)
    Say you have three things:
    £4.50, £3.99 and £7.68
    Round them up to £5, £4, £8
    Add up the excess: 83p

    Assume £20 limit: £20 - £17 = £3
    Plus excess: £3.83 in change

    Sounds long winded but works for me when I'm in a rush in Tesco! It's also very useful to know the pairs of numbers which add up to 100.

    Just round up all the time too, that way you'll know for certain if you have enough
    I don't understand where you got the excess from
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    (Original post by Anonbabes)
    I don't understand where you got the excess from
    Excess of rounding up

    50+1+32=83p
 
 
 

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