Math Practice 101
Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys
Chapter 3: Rational Numbers; MODULE 3 MIXED REVIEW


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Selected Response 

  • Question 1 (request help)

    What is \(-7\frac{5}{12}\) written as a decimal?
    • -7.25
    • -7.333...
    • -7.41666...
    • -7.512
  • Question 2 (request help)

    Glenda began the day with a golf score of -6 and ended with a score of -10. Which statement represents her golf score for that day?
    • -6 - (-10) = 4
    • -10 - (-6) = -4
    • -6 + (-10) = -16
    • -10 + (-6) = -16
  • Question 3 (request help)

    A submersible vessel at an elevation of -95 feet descends to 5 times that elevation. What is the vessel’s new elevation?
    • -475 ft
    • -19 ft
    • 19 ft
    • 475 ft
  • Question 4 (request help)

    The temperature at 7 P.M. at a weather station in Minnesota was -5 °F. The temperature began changing at the rate of -2.5 °F per hour. What was the temperature at 10 P.M.?
    • -15 °F
    • -12.5 °F
    • 2.5 °F
    • 5 °F
  • Question 5 (request help)

    What is the sum of -2.16 and -1.75?
    • 0.41
    • 3.91
    • -0.41
    • -3.91
  • Question 6 (request help)

    On Sunday, the wind chill temperature reached -36 °F. On Monday, the wind chill temperature only reached \(\frac{1}{4}\) of Sunday’s wind chill temperature. What was the lowest wind chill temperature on Monday?
    • -9 °F
    • -36\(\frac{1}{4}\) °F
    • -40 °F
    • -144 °F
  • Question 7 (request help)

    The level of a lake was 8 inches below normal. It decreased 1\(\frac{1}{4}\) inches in June and 2\(\frac{3}{8}\) inches more in July. What was the new level with respect to the normal level?
    • -11\(\frac{5}{8}\) in.
    • -10\(\frac{5}{8}\) in.
    • -9\(\frac{1}{8}\) in.
    • -5\(\frac{3}{8}\) in.

Mini-Task

  • Question 8 (request help)

    The average annual rainfall for a town is 43.2 inches.

    a. What is the average monthly rainfall?
  •    
  • Question 8 (request help)

    b. The difference of a given month’s rainfall from the average monthly rainfall is called the deviation. What is the deviation for each month shown?
  • May :    inch
    June :   inches
    July :   inches
  • Question 8 (request help)

    c. The average monthly rainfall for the previous 9 months was 4 inches. Did the town exceed its average annual rainfall? If so, by how much?
  •    

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