Express the product of \(\left({ 3 \times 10^{-2} }\right)\left( { 4 \times 10 ^ 5 }\right)\) in scientific notation.

\(\displaystyle{12.0\times 10^3}\) | |

\(\displaystyle{1.2\times 10^{-10}}\) | |

\(\displaystyle{12\times 10^{-10}}\) | |

\(\displaystyle{1.2\times 10^{2}}\) | |

\(\displaystyle{1.2\times 10^4}\) |

After watching the video, try this problem to practice more.

Express the product of \(2\times 10^7\) and \(9\times 10^{-3}\) in scientific notation.

\(\displaystyle{18\times 10^{4}}\) | |

\(\displaystyle{18\times 10^{-21}}\) | |

\(\displaystyle{1.8\times 10^{-21}}\) | |

\(\displaystyle{1.8\times 10^{5}}\) | |

\(\displaystyle{1.8\times 10^{4}}\) |