Scientific Notation/Examples/Division/Arbitrary Example

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Example of Multiplication and Division using Scientific Notation

$\dfrac {\paren {0 \cdotp 006} \paren {80 \, 000} } {0 \cdotp 04} = 12 \, 000$


Proof

\(\ds \dfrac {\paren {0 \cdotp 006} \paren {80 \, 000} } {0 \cdotp 04}\) \(=\) \(\ds \dfrac {\paren {6 \times 10^{-3} } \paren {8 \times 10^4} } {4 \times 10^{-2} }\) Definition of Scientific Notation
\(\ds \) \(=\) \(\ds \dfrac {6 \times 8 \times 10^{4 - 3} } {4 \times 10^{-2} }\) Product of Powers
\(\ds \) \(=\) \(\ds \dfrac {48} 4 \times 10^{1 - \paren {-2} }\) Quotient of Powers
\(\ds \) \(=\) \(\ds 12 \times 10^3\)
\(\ds \) \(=\) \(\ds 12 \, 000\) Definition of Scientific Notation

$\blacksquare$


Sources