I know this might sound stupid but I can't work out how to add and/or subtract on this model and can't understand the pictorial instrucions in the manual.

I can get the = sign to calculate division and multiplication but when I want to simply add columns of figures and then subtract I don't know how to do so. I only bought the machine this week and already it's driving me nuts.

Any advice you can give me would be gratefully received. Thanks

First keep the manual aside .

From "columns of figures ",do u mean a set of calculations.If this is the case, if your calculator has brackets{ } or [ ] ,use this function to add or subtract columns of figures.

Eg: [789+546+123+852+6547+65]=8922

OR

[789+587+6598+458] - [ 548+2587+456+584]=

8432 - 4175 = 4257

I hope this solution solves your problem.

Posted on Jul 17, 2008

Hi,

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Posted on Jan 02, 2017

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Thanks very much for having the courtesy and taking the time to reply I'm really grateful. Believe it or not, my problem is even simpler than this. If I want to add a list of financial items to show outgoings and incomings e.g. £15,000 + £11,500 + £26,000 - an outgoing of £10,000 I can't even perform this simple operation. If I add the 15,11.5 and 26 and press = nothing happens. If I press the + sign once more it adds the three numbers. If however I want to then deduct the 10 and press= still nothing happens and I don't know how to get it to display the £37,500 I'm looking for.

when two negative numbers subtract they should add together. but this calculator is subtracting. -39--11 should be -50 but it said -28. Why?

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