Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 McGraw Hill Glencoe - Answer Keys
Chapter 1 - Real Numbers; Lesson 7: Compute with Scientific Notation


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  Independent Practice  

Evaluate each expression. Express the result in scientific notation.

  • Question 1 (request help)

    \((3.9\times10^{2})(2.3\times10^{6}) =\)
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  • Question 2 (request help)

    \((4.18\times10^{-4})(9\times10^{-4}) =\)
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  • Question 3 (request help)

    \((9.75\times10^{3})(8.4\times10^{-6}) =\)
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  • Question 4 (request help)

    \(\cfrac{9.45\times10^{10}}{1.5\times10^{6}} =\)
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  • Question 5 (request help)

    \(\cfrac{1.14\times10^{6}}{4.8\times10^{-6}} =\)
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  • Question 6 (request help)

    \(\cfrac{9\times10^{-11}}{2.4\times10^{8}} =\)
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  • Question 7 (request help)

    Neurons are cells in the nervous system that process and transmit information. An average neuron is about \(5\times10^{-6}\) meter in diameter. A standard table tennis ball is 0.04 meter in diameter. About how many times as great is the diameter of a ball than a neuron?
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Evaluate each expression. Express the result in scientific notation.

  • Question 8 (request help)

    \((9.5\times10^{11}) + (6.3\times10^{9}) =\)
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  • Question 9 (request help)

    \((1.03\times10^{9}) - (4.7\times10^{7}) =\)
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  • Question 10 (request help)

    \((1.357\times10^{9}) + 590,000 =\)
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