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Calculators

A calculator is a hand-held inexpensive electronic device used to perform the operations of arithmetic. The simplest calculators can only do addition, subtraction, multiplication, and division, while scientific calculators can handle exponential operations, and trigonometric and logarithmic functions.

1,648 Questions

How do you find a percentage on a calculator?

You enter your number in the calculator then you times it by the percent and then press the percent button. Hope this helps!

If you don't have a calculator with a percentage sign divide the amount by the total and multiply by 100. For example:

In a test I got 18/20 or 18 out of 20.

I then go:

18 divided by 20=0.9

After this go:

0.9 multiplied by 100=90%

Hope this makes sense I've tried to explain it in a simple way. If you need further help just message me on my message board. <this part is Juralique by the way

Is there a calculator that can calculate fractions?

Absolutely! Today's calculators do far more than the early ones that only performed the basic operations of addition, subtraction, multiplication, and division. Most scientific calculators today have a Fraction Key which I will denote FK for this post.

For example, on the TI-30Xa, the FK is denoted a b/c which corresponds to a mixed number such as 3 1/2. There's also an improper fraction key denoted d/c which can be accessed using the 2ndfunction key. Regardless, I've found that the a b/ckey will suffice for any fraction (regular, improper, and mixed).

Entering fractions into the calculator is easy. Suppose you wanted to evaluate the following: 2 1/3 + 7/8. Enter "2 FK 1 FK 3 + 7 FK 8 =" Presto! Your answer appears in a format similar to the following "3_5_24" which represents 3 5/24.

No more having to find common denominators! The fraction key also works with the other basic operations of subtraction, multiplication, and division. Did I mention that it also reduces the answer to it's simplest form?

That Fraction Key is what I call amazing!

What does the sign E in a pocket calculator mean?

The E symbol means 'times ten to the power of'.

So 4E7 means 4 x 107 which is 40,000,000.

How do you get a program off of a graphing calculator?

Usually 2nd Memory... or 2nd Var-Link depending on your model. Then you will see a list you can delete from.

How does the calculator benefit human life?

The calculator is better at doing boring calculations than a human is, it solves most questions more quickly and accurately. This allows humans to spend more time doing what calculators can't (exerting creativity, formulating theories, etc.).

How do you Transfer to Another ti calculator?

It depends on what version(s) of TI calculator you are using.

Consult your manual, or give us more information.

How do you enter decimals on a casio fx-115ES?

Two ways.

Easy way first. Simply push the S-D button. This will toggle fractions and decimals.

More permanent way:

SHIFT

SETUP (also the MODE button)

2 (Select option 2 Line 10)

That's it!

When you want to go back to fractions then:

SHIFT

SETUP

1 (Selection option 1 Mth 10)

Now your back in fraction mode.

What does the 'Ti' stand for in calculator models?

Texas Instruments. which is the company that makes the calculators that say T.I.

When was the pager invented?

The first pager was invented in 1962 by Ma Bell and was a radio paging system. Pagers were popular in the 1980's and 1990's.

Who invented electronic calculator?

The first hand held electronic calculator was developed in 1967 by a team of engineers who worked for Texas Instruments. The team was conformed by Jack Kilby, Jerry Merryman and Jim Van Tassel.

Are there any games for the TI-nspire CAS calculator Games that you can install on your calculator if so where?

None have been made yet, due to the severe programming limitations put in place by TI. User input is minimally available, and programs cannot draw anything.

Post by Hagefade:

There is now:

http://www.ticalc.org/pub/nspire/basic/games/

enjoy!

Why is it easier to use a spreadsheet than either a pen or paper or a calculator?

It is easier to use a spreadsheet than a pen and paper because with a spreadsheet, mistakes can easily be corrected by canceling and repeating. Spreadsheets also carry out automatic scientific calculations such as mode, median and standard deviation.

Where can you find a unit conversion calculator?

Use an internet search engine such as Google, Yahoo or Live.com and it will direct you to several free and commercial unit conversion tools.

Some internet search engines can convert between units directly in them. Type in the units you want to convert from and it may suggest common conversions for you directly.

What is the average price of a calculator in 1970?

By 1970 a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries. The first portable calculators appeared in Japan in 1970, and were soon marketed around the world. These included the Sanyo ICC-0081 "Mini Calculator", the Canon Pocketronic, and the Sharp QT-8B "micro Compet". The Canon Pocketronic was a development of the "Cal-Tech" project which had been started at Texas Instruments in 1965 as a research project to produce a portable calculator. The Pocketronic has no traditional display; numerical output is on thermal paper tape. As a result of the "Cal-Tech" project Texas instruments was granted master patents on portable calculators. Sharp put in great efforts in size and power reduction and introduced in January 1971 the Sharp EL-8, also marketed as the Facit 1111, which was close to being a pocket calculator. It weighed about one pound, had a vacuum fluorescent display, rechargeable NiCad batteries, and initially sold for $395. However, the efforts in integrated circuit development culminated in the introduction in early 1971 of the first "calculator on a chip", the MK6010 by Mostek,[8] followed by Texas Instruments later in the year. Although these early hand-held calculators were very expensive, these advances in electronics, together with developments in display technology (such as the vacuum fluorescent display, LED, and LCD), lead within a few years to the cheap pocket calculator available to all. The first truly pocket-sized electronic calculator was the Busicom LE-120A "HANDY", which was marketed early in 1971. Made in Japan, this was also the first calculator to use an LED display, the first hand-held calculator to use a single integrated circuit (then proclaimed as a "calculator on a chip"), the Mostek MK6010, and the first electronic calculator to run off replaceable batteries. Using four AA-size cells the LE-120A measures 4.9x2.8x0.9 in (124x72x24 mm). The first American-made pocket-sized calculator, the Bowmar 901B (popularly referred to as The Bowmar Brain), measuring 5.2×3.0×1.5 in (131×77×37 mm), came out in the fall of 1971, with four functions and an eight-digit red LED display, for $240, while in August 1972 the four-function Sinclair Executive became the first slimline pocket calculator measuring 5.4×2.2×0.35 in (138×56×9 mm) and weighing 2.5 oz (70g). It retailed for around $150

How do you get to human calculator in world maths day?

You have to be very quick and get most the answers right. Once, I got human calculator but it only lasted for a while. Here are some tips:

  • Practise your time tables, division, addition, subtraction with random sums (if you want get a friend/family member to give you a test and see if you improve every week
  • Set out a chart with the times tables, division, addition and subtraction all mixed up and test yourself every day/every two days, etc.

I hope you get human calculator!

Yes, yes. What the previous person said is right.

I have managed to reach human calculator in 2010, and the sums get harder. You also play 1v1 sometimes, so it makes you really tense!

What is the square root of 125 without using a calculator?

square root of 125= 25 times 5 under the radical (25 has a square root so you can take that out of the radical)= 5 times the square root of 5 (Thats your final answer with no calculator)

How do you put sin on a calculator?

You need a scientific calculator, or one with function keys.

Calculator of mixed numbers?

http://freeonlinecalculator.net/calculators/math/mixednumbers.php Here ya go. :D