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How to mentally calculate customer change?

Update:

I am considering getting a job and it will involve calculating the change that I need to give customers back. I already know how to do this, i.e. something costs £3.35 and the customer gives you £10, then you just add 5p to it to make £3.40, then add 60p to make £4, then add £6 to make £10, so the total change is £6.65.

However what my problem is with, is calculating this mentally. I mean, I've tried doing it without saying anything and I keep forgetting values etc. For example, i'd add 5p to

4 Answers

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  • 7 years ago

    There is a much quicker way to do maths in your head.

    Takes a bit of practice to do it, but its an ultra cool trick that some memory dude called dominic something showed me on stage one night.

    You literally imagine you have a calculator and you click the buttons in your mind, then read the screen back, you at first check this with a real calculator but you will be stunned at how many times you did the math WITHOUT doing ANY math. Once you get confident enough you wont need to double check yourself.

    How it works: During your school years you already did most maths of numbers between $0.00 and $1000 so in your brain is a network that you can instantly recall the answer. You just have to trick yourself into doing it and be confident your correct, and you will be EVERY time. brains are weird lol.

  • Anonymous
    7 years ago

    Don't do it mentally. Count it out loud to the customer as you go. The customer then can check that it is correct at the same time.

  • 7 years ago

    Give the change back up to what they paid. They pay with a five and the cost was 4.65, you hand them back a dime and a quarter while you say "75 and a quarter makes 5."

  • Dave
    Lv 5
    7 years ago

    start playing darts,it will help you to add figures faster.

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