# How do you write a number in scientific notation SparkNotes Prealgebra Measurements Scientific Notation When making a measurement, a scientist can only reach a certain level of precision, limited either by the tools being used or the physical nature of the situation. Consider what happens when measuring the distance an object moved using a tape measure (in metric units). To write a number in scientific notation, we write it as a product of a single digit and a power of 10. Here are the steps to writing a number in scientific notation Write the first non-zero digit of the number times a power of ten--see Exponents and Negative Exponents. Scientific Notation Converter - CalculatorSoup The tape measure is likely broken down into the smallest units of millimeters. Enter a number or a decimal number or scientific notation and the calculator converts to scientific notation, e notation and engineering notation formats. To enter a number in scientific notation use a carat ^ to indicate the powers of 10. You can also enter numbers in e notation. Examples 3.45 x 10^5 or 3.45e5. Therefore, there's no way that you can measure with a precision greater than a millimeter. Writing a Number in Scientific Notation Step 1 Move the decimal point so that you have a number that is between 1 and 10. In other words, you will put your decimal after the first non zero number. Scientific Notation If the object moves 57.215493 millimeters, therefore, we can only tell for sure that it moved 57 millimeters (or 5.7 centimeters or 0.057 meters, depending on the preference in that situation). Getting the precise movement of a normal-sized object down to a millimeter would be a pretty impressive achievement, actually. Scientific notation is another way to write a number. In scientific notation, the letter E is used to mean "10 to the power of." For example, 1.314E+1 means 1.314 * 10 1 which is 13.14. Scientific notation is merely a format used for input and output. How to Write Numbers in Scientific Notation - dummies Imagine trying to measure the motion of a car to the millimeter, and you'll see that, in general, this isn't necessary. Scientific notation is a standard way of writing very large and very small numbers so that they’re easier to both compare and use in computations. To write in scientific notation, follow the form where N is a number between 1 and 10, but not 10 itself, and a is an integer positive or negative number.

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