Scientific Notation. Basics. All numbers written in scientific notation will look like this: n x 10 a n = a number that is greater than or equal to one and less than 10 1 ≤ n < 10
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n x 10a
n = a number that is greater than or equal to one and less than 10 1 ≤ n < 10
a = the number of times the decimal moved when the number was in standard form.The number in standard form determines whether the exponent is positive or negative.
5.493 5.493 X 102
Now the power of 10 that goes with this number will have a positive exponent of 2 because we moved the decimal two times and the number was greater than 1 in standard form.
2.982.98 x 10-4
The power of 10 that goes with this number will have a negative exponent because the number in standard form was less than 1.
4.1.0001 x 1055.3.77 x 10-46.8.1 x 103