# what does 1.E+02 mean?

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You have some correct answers, the best one so far being anonymous for some reason. I'll throw in some history, just in case anyone is interested.

The "E notation" for real numbers began with early computers. It was certainly in use in FORTRAN, one of the earliest programming languages, and may have been used in machine language programs before that. In the 1950s, computers were still quite new and input/output devices were quite simple. Typically, device could print digits, capital letters and a handful of punctuation characters.

So, the capital E (for "expoenent") was used as a compact way of showing the exponent of a number in "scientific notation". The "times ten to the power" part was implied.

To get printed output to line up, the decimal point and E needed to be in the same position on every line, and the "one's digit" of the exponents needed to line up. Since a minus sign might be needed for a negative exponent, a position was left for that. Some programs would print a space there if the exponent was positive; others would print a + sign, so that's where the + and 0 come from 1.E+02, and why the decimal point is there.

A modern programming language, with free-form input, would accept 1E2 as meaning the same thing: 1 times 10 to the 2nd power, or 100.

Later, early electronic calculators used this idea. Those used 7-segment LED output devices that could (barely) represent the ten digits needed, but could manage to display an E.

Today, it's used in nearly every programming language to represent floating point data in scientific notation, and is often used online in technical forums.

• Vaman
Lv 7
6 months agoReport

The best explanation.

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• 1 x 10 ^ 2 it is in scientific notation

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• E(followed by a number) is a form of scientific notation that was employed back when computers could not display superscripts and subscripts. the E is used as shorthand for "exponent", and the understood base number is 10. so E-6 would mean 1 x 10^-6 or ten to the power of -6. e02 would mean 10^2. 1.E02 would mean 100. Very odd to see 1.E rather than 1.0E2 (or 1.0e02) though. Don't need a decimal unless there is a significant digit which follows.

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• 1.E + 02 =

1 * 10^2 =

100

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• E stands for 10. 100 =1E^(2). 1/100=1 E^(-2)

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• It means 10 squared, or 10X10. This nomenclature is often used in computer coding.

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• 100

This is a calculator's way of expessing 1 x 10^2. You can normally turn that off for numbers in typical range. It comes in useful for scientific notation where you might have 3.6E-20. That would mean 3.6 x 10^(-20).

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• Anonymous
6 months ago

It means one times ten to the power +02. This is the same as:

1 x 10² = 100

This format of notation is often used in spreadsheets and computer programming. It is especially convenient when representing very large and very small numbers.

E.g. 1230000 = 1.23x10⁶ which can be written as 1.23E6, and which is often displayed as 1.23E+06

E.g. 0.0000005 = 5x10⁻⁷ which can be written as 5E-7, and which is often displayed as 5E-07

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