7th Grade Math

Test PracticeT

350 Percent

32. SURVEY There are 622 students at Jackson Middle School. About 52.3% of them
    selected art class as their favorite class. What is a reasonable estimate for
    the number of students who chose art as their favorite?(Lesson 2D)

ALGEBRA Write an equation for each problem. Then solve. Round to the

nearest tenth if necessary. (Lesson 2C)

33. 30% of what number is 17? 34. What is 21% of 62?


34. What number is 64% of 150? 36. 18 is what percent of 200?


35. 5 is 20% of what number? 38. What is 60% of 35?


36. TIME The graph shows the time Manuel spends
    on daily activities during the week. (Lesson 2C)
    a. Write an equation to find the percent of time
    that Manuel spends at band practice. Then
    solve the equation.
    b. About what percent of time does Manuel
    spend sleeping?


37. Which of the following represents the
    least percent of change?
    A. A coat that was originally priced at
    $90 is now $72.
    B. A puppy who weighed 6 ounces at
    birth now weighs 96 ounces.
    C. A child grew from 54 inches to
    60 inches in 1 year.
    D. A savings account increased from
    $500 to $550 in 6 months.


38. SHORT RESPONSE A music video
    Web site received 5,000 comments on a
    new song they released. After the artist
    performed the song on television, the
    number of comments increased by 30%
    the next day. How many new comments
    were on the Web site at the end of the
    next day?


39. Students in a reading program gradually
    increased the amount of time they read.
    The first week, they read 20 minutes
    per day. Each week thereafter, they
    increased their reading time by 50%
    until they read an hour per day. In what
    week of the program did the students
    begin reading an hour per day?
    F. Week 2 H. Week 4
    G. Week 3 I. Week 5


40. GRIDDED RESPONSE Find the
    percent of change in the perimeter of the
    square below if its side length is tripled.

3 cm

3 cm

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