You are watching: What does e on the calculator mean

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On a calculator display, E (or e) represents exponent that 10, and also it"s always followed by another number, which is the worth of the exponent. For example, a calculator would display the number 25 trillion as one of two people 2.5E13 or 2.5e13. In various other words, E (or e) is a short form for scientific notation.

Science is complete of very large and very tiny numbers the are complicated to read and also write. For example, the fixed of the planet is 5,970,000,000,000,000,000,000,000 kilograms, while the fixed of a hydrogen atom is 0.00000000000000000000000000167 kilograms. Clinical notation renders these numbers simpler to take care of by to express the 0"s together a power of ten. Using this notation, the massive of the earth becomes 5.97 × 1024 kg, and the fixed of a hydrogen atom i do not care 1.67 × 10-27 kg. Rather of number with lengthy strings that zeros the are challenging to count and also even more an overwhelming to screen on a little screen, you have an ext manageable decimal fractions and exponents the 10.

In its written form, clinical notation would look weird on a calculator. It would be confusing and also it wouldn"t right on a tiny display. To stop these problems, manufacturers developed a symbol for "X 10." This prize is either E or e, depending on the calculator. This letter is constantly followed by a number, i m sorry is the exponent come which 10 is raised.

On a calculator display, the mass of the earth would be displayed as 5.97E24 (or 5.97e24). The number 5.97 is the argument and the number 24 is the exponent. Similarly, the massive of a hydrogen atom would certainly be 1.67E-27 (or 1.67e-27).

It"s just as daunting to beat in lengthy strings the zeroes on a calculator pad together it is to write them on paper, so must calculators have actually a shortcut. It"s the EE key. To go into a number in clinical notation, first input the argument, then press the EE key and enter the exponent. For example, to go into the mass of the earth, crucial in 5.97, then press the EE vital and get in 24. The display will read 5.97E24 (or 5.97e24). Note that the number will show up with every its zeroes if lock fit ~ above the screen. Because that example, if you vital in 1.2 EE 5, the screen will show 120,000.

Most scientific calculators devote a special crucial to Euler"s number, since it is among the most essential irrational numbers in mathematics and also enters into all type of scientific calculations. This is the "e" key. Press it, and also Euler"s number will show up in your screen to the accuracy the display screen allows. The scientific calculator on one iPhone, because that example, shows 2.718281828459045. In addition, many calculators additionally have one "ex" key. Enter a number, press this vital and the screen will present the value of e raised to the exponent friend entered. In no of these cases does "e" have actually the same an interpretation as it does when it appears in the display.

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Chris Deziel hold a Bachelor's degree in physics and a Master's level in Humanities, He has actually taught science, math and English in ~ the college level, both in his indigenous Canada and also in Japan. He began writing digital in 2010, offering info in scientific, cultural and valuable topics. His creating covers science, math and home development and design, as well as religion and the asian healing arts.