The calculator is great, thank you. How do I use it to calculate fractions and mixed fractions so the answer comes out as fractions instead of decimals?
Lisa - USA
18535
Answer
I don't know of any calculator that works with fractions.
Typically, you have to change a fraction or mixed number to a decimal and then change it back to a fraction. That is so cumbersome that it is easier to work with fractions with a pencil and paper. Also, fractions and mixed numbers usually are small enough numbers that you can easily do that.
But changing a decimal like 0.125 to 125/1000 = 1/8 is not too easy to do.
I was just looking over some web resources and I believe you've made a minor error in one of the problems. The instructions for using the memory function on the scientific calculator say: "You want to add 1 + 2 and then MULTIPLY that by the sum of 8 - 3."
The instructions that follow are provided to ADD instead of multiply. No response is necessary, but I thought you might want to correct the error. I believe that has been a source of confusion for a previous poster.
Thanks
- USA
16642
Answer
Thanks for letting me know. I corrected the error.
I really want to update that whole section about using the calculator. It can be confusing.
On this page: http://www.school-for-champions.com/science/calculations/using_calculator.htm
you multiply 3 x 5 and get 8 because Step 6 is wrong.
Adding to memory exercise: You want to add 1 + 2 and then multiply that by the sum of 8 - 3.
1. Click AC to clear all. 2. Add 1 + 2 and click =. 3. Click MC to clear the memory, then click M+ to add the value to memory. 4. Click AC to clear previous addition. 5. Then enter 8 - 3 =. 6. Click + to add another number. 7. Click MR to recall what is in memory. Then click =. You should get a total of 8
To see how to add more to memory, click M+ and then MR. The 8 should be added to the 3 already in memory, giving you 11 when you recall memory.
- USA
15815
Answer
I'm not sure I understand what you are saying. I don't have anything about 3 x 5 in that exercise. It is all addition and subtraction.
Step 5 says 8 - 3 = 5. Step 6 says click + to add another number to 5. Step 7 recalls 3 from memory and = completes the addition.
how can i use a calculator on sin,cos and tan can u please tell me everything about as well thank you,and please plase wright clearly because sometimes i go searching for math formulas and i read it and i come up with nothing. thank you
mohamed - USA
14072
Answer
With the simple calculator on our site, you can enter the number of degrees first and then click on the trigonometric function to get its value. For example, enter the angle 30 degrees. Then click sin to get the value of 0.5 for the sine of 30 degrees.
Likewise, for the tangent of 40 degrees, you enter 40 and click tan to get 0.839.
But note that with this calculator, you must do the trigonometric function first before multiplying. You must be careful with it. In better calculators, you can do multiplication in any order.
Does not understand e notation in scientific calculator
Question
November 1, 2006
Using Windows XP scientific calculator I calculated that a population explosion averaging a mere 1.1 people per person, with a generation interval of 20 years over 500,000 years would give us:
2x1.1^(500000/20) = 2.2^(25000) = 3.6899506269153657586250959350449e+8560 people alive on the earth.
But I do not understand the notation and the program's "help" does not help.
Can you explain what e+8560 means?
Thanks
Allan - UK
12284
Answer
Many scientific calculators use either e or E to denote raising 10 to an exponential power. Thus e+2 = 10^2 = 100. 5e+2 = 5*10^2. Also, something like 7e-3 = 7*10^-3 = 7/1000.
Note that since you are starting with 1.1, your accuracy is only 1 decimal point. Thus, your final number should be rounded off to 1 decimal point. Your answer should be 3.7*10^8560.
But this is certainly more people than would ever be on Earth, because there is not enough space for that many people. Estimates that the maximum number of people the Earth can sustain is about 12*10^9 people.
Hello - when using the following real estate formula: 1-(1+(.07/12))-360 the -360 is smaller than the rest of the numbers what does this mean and how do i calculate that on my scientific calculator?
Jackie - USA
9549
Answer
Something is wrong with the formula you gave. It seems like you are missing some multiplication or division. You have 1 - 1.00583 - 360 = -360.00583. That isn't right.
this as been really helpfull, i am currently studying optical dispensing and there is a lot of maths which is all based in scientific calculations but except i need to buy one scintific calcultor with exp and inv buttons in it can you reccomend how through internet. lara from australia
lara - Australia
9485
Answer
Windows has a calculator that you can use until you purchase a real one. If you open the calculator and click View > Scientific, it will display one with most features.
Most office supply or computer stores sell scientific calculators. I would do that because you can see what it looks like and even try it out. Also, if it is not what you want, you can return in. Sometimes it is difficult to return calculators bought online. Amazon.com sells calculators, if you still want to buy online.
Hope this messaeg reaches to you at the best of your cheer. This is Atul Dabke and you are using my semi scientific calculator on your site. I am working in the eLearning field and have worked extensively on educational courswares - espacially of K-12 level. I will be happy to work for you if you can give me such opportunity and I assure you about quality work with very competitive prices. I can also do a small demo project for you as per your specifications.
Looking forward for your positive reply.
Thanks & Regards, Atul Dabke
Atul - India
7343
Answer
You did a very good job on the calculator. It was one of the better ones that I have found on the Internet, and we appreciate being able to use it.
I would like to help you get more work, if I could. Unfortunately, we are a nonprofit organization with no funds to hire people. Even getting contributed articles and lessons is difficult, because of the extra time they take.
What I can do is to add some sentences stating that you are available to work on e-learning projects and to tell people to contact you. That may help.
If you have some other ideas of ways you can promote your services through our site, we may be able to help there too.
Best wishes in getting more work. E-learning and Flash development are highly competitive fields, so the more you get your name out, the better it is.
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