Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 1: Real Numbers; Mixed Review


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Selected Response

  • Question 1 (request help)

    The square root of a number is 9. What is the other square root?
    • -9
    • -3
    • 3
    • 81
  • Question 2 (request help)

    A square acre of land is 4,840 square yards. Between which two integers is the length of one side?
    • between 24 and 25 yards
    • between 69 and 70 yards
    • between 242 and 243 yards
    • between 695 and 696 yards
  • Question 3 (request help)

    Which of the following is an integer but not a whole number?
    • -9.6
    • -4
    • 0
    • 3.7
  • Question 4 (request help)

    Which statement is false?
    • No integers are irrational numbers.
    • All whole numbers are integers.
    • No real numbers are irrational numbers.
    • All integers greater than 0 are whole numbers.
  • Question 5 (request help)

    Which set of numbers best describes the displayed weights on a digital scale that shows each weight to the nearest half pound?
    • whole numbers
    • rational numbers
    • real numbers
    • integers
  • Question 6 (request help)

    Which of the following is not true?
    • \( \pi ^2 \lt 2 \pi + 4\)
    • \( 3 \pi \gt 9\)
    • \( \sqrt { 27} + 3 \gt \frac{17}{2}\)
    • \( 5 – \sqrt{ 24} \lt 1\)
  • Question 7 (request help)

    Which number is between \(\sqrt{21}\) and \(\large\frac{3\pi}{2}\) ?
    • \(\large\frac{14}{3}\)
    • \( 2 \sqrt{6}\)
    • 5
    • \( \pi + 1\)
  • Question 8 (request help)

    What number is shown on the graph?
    • \(\pi + 3\)
    • \(\sqrt{4} + 2.5\)
    • \(\sqrt {20}+2\)
    • \( 6.\overline{14}\)
  • Question 9 (request help)

    Which is in order from least to greatest?
    • \(3.3, \frac{10}{3}, \pi, \frac{11}{4}\)
    • \(\frac{10}{3}, 3.3, \frac{11}{4}, \pi\)
    • \(\pi, \frac{10}{3}, \frac{11}{4}, 3.3\)
    • \(\frac{11}{4}, \pi, 3.3, \frac{10}{3}\)

Mini-Task

  • Question 10 (request help)

    The volume of a cube is given by \(\text{V} = \text{x}^3\), where x is the length of an edge of the cube. The area of a square is given by \(\text{A} = \text{x}^2\), where x is the length of a side of the square. A given cube has a volume of 1728 cubic inches.

    a. Find the length of an edge.
  •     inches
  • Question 10 (request help)

    b. Find the area of one side of the cube.
  •     \(\text{ in}^2\)
  • Question 10 (request help)

    c. Find the surface area of the cube.
  •     \(\text{ in}^2\)
  • Question 10 (request help)

    d. What is the surface area in square feet?
  •     \(\text{ ft}^2\)

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