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Grade 8 HMH Go Math - Answer Keys
Chapter 2: Real Numbers; Mixed Review
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Selected Response
Question 1
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Which of the following is equivalent to \( 6^{–3}\)?
Question 2
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About 786,700,000 passengers traveled by plane in the United States in 2010. What is this number written in scientific notation?
Question 3
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In 2011, the population of Mali was about \(1.584 \times 10^7\) people. What is this number written in standard notation?
Question 4
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The square root of a number is between 7 and 8. Which could be the number?
Question 5
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Each entry-level account executive in a large company makes an annual salary of \($3.48 \times 10^4\). If there are \(5.2 \times 10^2\) account executives in the company, how much do they make in all?
Question 6
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Place the numbers in order from least to greatest. \(0.24, 4 \times 10^{-2}, 0.042, 2 \times 10^{-4}, 0.004\)
Question 7
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Guillermo is \(\large5\frac{5}{6}\) feet tall. What is this number of feet written as a decimal?
Question 8
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A human hair has a width of about \(6.5 \times 10^{-5}\) meter. What is this width written in standard notation?
Mini-Task
Question 9
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Consider the following numbers: 7000, 700, 70, 0.7, 0.07, 0.007
a. Write the numbers in scientific notation.
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Question 9
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b. Look for a pattern in the given list and the list in scientific notation. Which numbers are missing from the lists?
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Question 9
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c. Make a conjecture about the missing numbers.
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