What sort of maths do you need for every day? Do you know enough to get by?

@pandaeyes (2065)
March 11, 2010 9:25am CST
I often find myself having to add up or take away fast in my head and I can manage quite well with it. Percentages are also not too bad as they are just parts out of a hundred. Sometimes though things get more complicated, for example if there is a reduction in a price, I cant work out what the cost was originally just from knowing the percentage. Also if I must do calculations without knowing what the numbers are, I get terribly muddled. My son had some sums to do once with N instead of numbers, he had to work out the sequences using the letter and then give the answer also using N. Terribly muddling. But I haven't yet found that I really need a lot of the sums that we had to learn in school. We use addition ,multiplication,subtraction and division every day in cooking, making things and in shopping but what do people use Algebra for? What about logarithms? If you have to calculate in your head, can you manage it? What maths skill is most useful to you?
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5 responses
@gerald_lian (2188)
• Australia
11 Mar 10
I can use my brain to manage most simple calculations in everyday life such as adding and subtracting without much problems. Multiplication and division are OK for me too, however it must just be simple calculation and not complicated ones. But if you give me a paper or a calculator, I will be much better at calculating because the numbers are right in front of me to deal with. I remember back in the school days where the teacher will give us a long story and ask us to change it all to one simple algebraic equation, and then ask us to solve it. Right now I can't think of an example, but algebra certainly has its place in everyday life. I am sure logarithms had their use too, but I can't think of it right off hand. But for me, I think the most useful skill to learn in maths is trigonometry. I remember a friend in college gave me a tough math quiz question to solve; I tried many different math formula and theorems to try and solve it but I still couldn't. Never once did I think of using trigonometry because the question didn't reek of trigonometry at all. That was when my friend did the magic using trigonometry and solved the problem. I was in awe, and it certainly changed my perception of trigonometry from then on. But all in all, I think we all can survive with just basic maths. Let us just leave the complicated maths to the experts in the field.....
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@pandaeyes (2065)
11 Mar 10
My father in law used things like area and volume quite often as he was an architect. We quizzed for ages about how much concrete to buy to make a shed base but he just worked it out for us in his head.
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@p1kef1sh (45681)
11 Mar 10
I was terrified by arithmetic and maths at school. Totally phobic about it. But then I got my first pay packet and I made sure that it was right! I use simple arithmetic every day several times a day. I suppose that if I look to see how far away something is or what rough angle an object is then I use geometry. I use percentages sometimes but I don't think that I have used a logarithm in nearly forty years. Anyone want to buy a slide rule?
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@p1kef1sh (45681)
4 Apr 10
Thank you for the BR. I have worked out that you're the best!
@pandaeyes (2065)
12 Mar 10
LOL My Father in law used them too so I guess he found a use for logarithms. One man at work could work out if his tax and insurance had been correctly calculated just by looking at his payslip. He was the assistant to the carpenter and I suppose they did use a fair bit of arithmetic in their role.
@Hatley (163776)
• Garden Grove, California
11 Mar 10
oandaeyes I use the plain old add,subtract, multiply and divide as beyongd that I am totally lost. Ican't fathom algebra, and did not even try trigonometry and geometry let alone calculus.For me the simpler the better as I just use math when buying things or paying bills and balancing my checkbook.
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@pandaeyes (2065)
11 Mar 10
Yes I think that is the same for most people after school. There is a shop that reduces things by 50% and then to 25% if they don't sell before that. I have often had to query a price when it was marked down and rather than the shop assistant just going yes it is wrong isn't it? They will call the supervisor for a second opinion. I think it is a bit crazy as 50% ,well that's half of the full price and 25% is a quarter of the full price. LOL How hard can it be?
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• Estonia
11 Mar 10
I am still studying, so math is an every day routine for me. I am fine with calculating in my head and solving equations or logarithms. I think I know much more than I could use in my everyday life, for example when going shopping. Anyway, I need to know that, cause I am having tests regularly at school, so I must be prepared.
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@pandaeyes (2065)
12 Mar 10
I think my Maths is far improved now that I have left school. We home schooled our two children for quite a long time and I would work through all the maths problems ahead of the lessons so that I could properly explain if they needed help. The practice vastly improved how I looked at numbers. Sometimes it is how it has been explained in the first place that is the biggest problem. I was watching a documentary about school kids being behind in maths and a very elderly teacher was showing them the basics and said that a lot of children had problems with even the concept of multiply and divide.
@dorannmwin (36392)
• United States
13 Mar 10
Well, obviously it is important to be able to do the basic elementary math that we learned in our first couple of years of school. So that would be addition, substraction, division and multiplication. I also think that it is important to have money sense and also to be able to use fractions. However, beyond that I don't think that much of the math that we learn while in school has applications that are used on a regular basis by the general population.
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@pandaeyes (2065)
15 Mar 10
It makes you wonder if there isn't some way of filtering maths so that in school,those who wish to ,could go for the more elaborate maths but those who didn't could stick with the more basic skills. We had a very good book that my daughter worked through which looked at real world maths. It had calculations for things like 'the sales' is it really a bargain?,filling in forms in a shopping catalogue (with basic percentages for commission),quick ways to calculate VAT(tax on shopping). She could see the reason to know those things and enjoyed working through them.