Here are the essential concepts you must grasp in order to answer the question correctly.
Scientific Notation
Scientific notation is a method of expressing numbers that are too large or too small in a compact form. It is written as the product of a number between 1 and 10 and a power of ten. For example, the number 0.00025 can be expressed as 2.5 x 10^-4 in scientific notation.
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Significant Figures
Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion. When converting to scientific notation, it is important to retain the correct number of significant figures, which in this case is two.
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Significant Figures (Simplified) Example 2
Decimal to Scientific Conversion
Converting a decimal number to scientific notation involves identifying the first non-zero digit and adjusting the decimal point accordingly. The exponent of ten indicates how many places the decimal point has moved. For instance, moving the decimal in 0.00025 to the right four places gives us 2.5 x 10^-4.
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