7th Grade Math

(Marvins-Underground-K-12) #1
Mid-Chapter Check 157

Mid-Chapter


Check


Write each fraction or mixed number as a
decimal. Use bar notation if the decimal is
a repeating decimal. (Lesson 1B)


  1. ^78 2. - 92 3. 3 _^1320


Write each decimal as a fraction in simplest
form. (Lesson 1B)


  1. 0.6 5. 0.48 6. -7.02

  2. ANIMALS The maximum height of an Asian
    elephant is 9.8 feet. What mixed number
    represents this height? (Lesson 1B)


Replace each ● with <, >, or = to make a
true sentence. (Lesson 1C)




    • 53 ● - ^59 9. 4 127 ● 4.75 10. ^1320 ● 0.65



  1. WATER The table at
    the right shows the
    fraction of each state
    that is water. Order
    the states from least
    to greatest fraction
    of water. (Lesson 1C)


Add or subtract. Write in simplest form.
(Lesson 2A)




    • 1511 - 151 13. 144 - 143





    • 91 + 92 15. 85 + ^38



  1. SCIENCE ^3950 of Earth’s atmosphere is made
    up of nitrogen while only
    10021 is made up
    of oxygen. What fraction of Earth’s
    atmosphere is either nitrogen or oxygen?
    (Lesson 2C)


Add or subtract. Write in simplest form.
(Lesson 2D)


  1. 8 43 - 2 125 18. 5 61 - 1 ^13

  2. 2 95 + 1 32 20. 2 53 + 6 ^1315
    21. MULTIPLE CHOICE The table shows the
    weight of a newborn infant for its first
    year. (Lesson 2D)


Month Weight (lb)
0 7 1 _ 4
3 12 _^12
6 16 _^58
9 19 _^45
12 23 _ 203

During which three-month period was the
infant’s weight gain the greatest?
A. 0–3 months C. 6–9 months
B. 3–6 months D. 9–12 months


  1. MEASUREMENT How much does a
    50 ^14 -pound suitcase weigh in simplest form
    after 3
    ^78 pounds are removed? (Lesson 2D)

  2. MULTIPLE CHOICE The table gives the
    average annual snowfall for several
    U.S. cities. (Lesson 2D)


City Snowfall (in.)Average

Anchorage, AK 70 _^45
Mount
Washington, NH^259

_^9
10
Buffalo, NY 93 _^35
Birmingham, AL 1 _^12

On average, how many more inches of snow
does Mount Washington, New Hampshire,
receive than Anchorage, Alaska?
F. 330 _ 107 in. H. 166 _ 103 in.

G. 189 101 in. I. 92 101 in.


What Part is Water?
State Fraction
Alaska _ 413
Michigan _^4097
Wisconsin _^16

157_157_MCC_895130.indd 157 12/31/09 12:39 PM

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