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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  Guided Practice  

Evaluate each expression. Express the result in scientific notation.

  • Question 1 (request help)

    \((2.6\times10^{5})(1.9\times10^{2}) =\)
  • Type below:
  • Question 2 (request help)

    \(\cfrac{8.37\times10^{8}}{2.7\times10^{3}} =\)
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  • Question 3 (request help)

    In 2005, \(8.1\times10^{10}\) text messages were sent in the United States. In 2010, the number of annual text messages had risen to 1,810,000,000,000. About how many times as great was the number of text messages in 2010 than 2005?
  • About   times

Evaluate each expression. Express the result in scientific notation.

  • Question 4 (request help)

    \((8.9\times10^{9}) + (4.2\times10^{6}) =\)
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  • Question 5 (request help)

    \((9.64\times10^{8}) - (5.29\times10^{6}) =\)
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  • Question 6 (request help)

    \((1.35\times10^{6}) - (117,000) =\)
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  • Question 8 (request help)

    Building on the Essential Question How does scientific notation make it easier to perform computations with very large or very small numbers?
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