Math Practice 101
Homework Explained - Math Practice 101

Dear guest, you are not a registered member. As a guest, you only have read-only access to our books, tests and other practice materials.

As a registered member you can:

Registration is free and doesn't require any type of payment information. Click here to Register.
Go to page:  

Grade 8 HMH Go Math - Answer Keys
Chapter 2: Real Numbers; Mixed Review


Please share this page with your friends on FaceBook

Selected Response

  • Question 1 (request help)

    Which of the following is equivalent to \( 6^{–3}\)?
    • 216
    • \(\large\frac{1}{216}\)
    • \(\large-\frac{1}{216} \)
    • -216
  • Question 2 (request help)

    About 786,700,000 passengers traveled by plane in the United States in 2010. What is this number written in scientific notation?
    • \( 7,867 \times 10^5\) passengers
    • \( 7.867 \times 10^2\) passengers
    • \(7.867 \times 10^8\) passengers
    • \(7.867 \times 10^9\) passengers
  • Question 3 (request help)

    In 2011, the population of Mali was about \(1.584 \times 10^7\) people. What is this number written in standard notation?
    • 1.584 people
    • 1,584 people
    • 15,840,000 people
    • 158,400,000 people
  • Question 4 (request help)

    The square root of a number is between 7 and 8. Which could be the number?
    • 72
    • 83
    • 51
    • 66
  • Question 5 (request help)

    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?
    • \($6.69 \times 10^1\)
    • \($3.428 \times 10^4\)
    • \($3.532 \times 10^4\)
    • \( $1.8096 \times 10^7\)
  • Question 6 (request help)

    Place the numbers in order from least to greatest.
    \(0.24, 4 \times 10^{-2}, 0.042, 2 \times 10^{-4}, 0.004\)
    • \( 2 × 10^{-4}, 4 × 10^{-2}, 0.004, 0.042, 0.24\)
    • \( 0.004, 2 × 10^{-4}, 0.042, 4 × 10^{-2}, 0.24\)
    • \( 0.004, 2 × 10^{-4}, 4 × 10^{-2}, 0.042, 0.24\)
    • \( 2 × 10^{-4}, 0.004, 4 × 10^{-2}, 0.042, 0.24\)
  • Question 7 (request help)

    Guillermo is \(\large5\frac{5}{6}\) feet tall. What is this number of feet written as a decimal?
    • 5.7 feet
    • \(5. \overline{7}\) feet
    • 5.83 feet
    • \(5.8\overline{ 3} \) feet
  • Question 8 (request help)

    A human hair has a width of about \(6.5 \times 10^{-5}\) meter. What is this width written in standard notation?
    • 0.00000065 meter
    • 0.0000065 meter
    • 0.000065 meter
    • 0.00065 meter

Mini-Task

  • Question 9 (request help)

    Consider the following numbers: 7000, 700, 70, 0.7, 0.07, 0.007

    a. Write the numbers in scientific notation.
  • Type below:
  • Question 9 (request help)

    b. Look for a pattern in the given list and the list in scientific notation. Which numbers are missing from the lists?
  • Type below:
  • Question 9 (request help)

    c. Make a conjecture about the missing numbers.
  • Type below:

Yes, email page to my online tutor. (if you didn't add a tutor yet, you can add one here)