GRADE 7 ANSWER KEY
MATHEMATICS
CMT PRACTICE
PACKET
from BRIDGEPORT PUBLIC SCHOOLS
MATHEMATICS DEPARTMENT
Revised January 2012 for WMS
GRADE 7
ANSWER KEY
GRADE 7 ANSWER KEY
GRADE 7
Math CMT Practice Packet
DIRECTIONS Read each question and choose the best answer. Circle the letter for the answer you have chosen.
1.) A minute is 0.0000019 year. How is this number expressed in scientific
notation?
A. 1.9 × 10 -6 B. 1.9 × 10 -5 C. 1.9 × 10 5 D. 1.9 × 10 6
2.) Kimberly has 2 grasshoppers of the same species. The corresponding
parts of the grasshoppers’ bodies are proportional. The larger
grasshopper has an 8-centimeter body and a 1.5-centimeter forelimb. The
smaller grasshopper has a 1.2-centimeter forelimb. How long is the body
of the smaller grasshopper?
A. 10.0 cm B. 7.7 cm C. 6.4 cm D. 6.0 cm
3.) The drawing represents the view from directly above a solid figure that
was built with cubes.
Which drawing below shows a solid figure that would have this view
from directly above?
4.) At a candy store, chocolate costs $0.35 per ounce. Hector bought 8.25
ounces, Jeanette bought 8.7 ounces, James bought 8.05 ounces, and
Shanika bought 8.42 ounces. Which list shows these weights in order
from least to greatest?
A. 8.05 oz, 8.25 oz, 8.42 oz, 8.7 oz B. 8.42 oz, 8.05 oz, 8.25 oz, 8.7 oz
C. 8.05 oz, 8.7 oz, 8.25 oz, 8.42 oz D. 8.7 oz, 8.05 oz, 8.25 oz, 8.42 oz
5.) A high school counselor surveyed some juniors to find out which
careers they were most interested in pursuing. The chart shows the
results of the survey.
Which graph best represents these data?
6.) Which expression is equal to (a + b)c?
A. a + bc B. ab + bc C. ac + ab D. ac + bc
7.) Harriet surveyed 24 students in her tenth-grade homeroom. She recorded
each student’s favorite vehicle color.
There are 360 tenth graders at Harriet’s school. Based on the results of
the survey, how many of these students would be expected to choose red
as their favorite color of vehicle?
A. 60 B. 72 C. 90 D. 96
8.) In the last football game, David completed 5 out of every 9 passes that
he attempted. At this rate, which proportion can be used to find c, the
total number of passes that he would complete in his next 36 pass
attempts?
9.) There are approximately 395,000,000 grains of sand in a child’s
sandbox. How is this number expressed in scientific notation?
A. 3.95 × 108 B. 39.5 × 107 C. 39.5 × 106 D. 3.95 × 106
10.) Pete asked for a gift box when he purchased a present for his mother.
He received a box that he had to put together.
What is the surface area of the box?
A. 92 in.2 B. 138 in.2 C. 340 in.2 D. 400 in.2
11.) Which figure best represents a reflection of triangle DEF across the y-
axis?
12.) The Wilkerson family owns a pecan orchard. Each pecan tree produces
from 20 to 30 pounds of pecans each year. There are 220 pecan trees.
Which could be the total number of pounds of pecans produced per
year?
A. 2,200 lb B. 5,400 lb C. 7,500 lb D. 11,000 lb
13.) Cameron can buy single poster boards for 79¢ each or a package of 12
poster boards for $7.50. Not including tax, how much more would
Cameron have to pay for 3 dozen poster boards if he buys them
individually than if he buys them in packages?
A. $1.98 B. $2.37 C. $5.13 D. $5.94
14.) To calculate C, the total cost of a repair, a plumbing company uses the
equation C = 24h + p where 24 is the plumber’s hourly rate in dollars,
h is the number of hours of labor, and p is the cost of the parts for the
repair. If the work for Mr. Mendoza took 2 hours and the parts cost
$45, what was the total cost of the plumbing repair?
A. $48 B. $69 C. $71 D. $93
15.) Carolyn cared for a neighbor’s child during the summer. She received
$125 per week for taking care of the child an average of 27 hours.
Which is the best estimate of Carolyn’s pay per hour?
A. Less than $3 B. Between $3 and $4
C. Between $4 and $5 D. More than $5
Allie has $32.50. Which is the best estimate of the heaviest item she
can ship?
A. 50 B. 35 C. 20 D. 15
17.) A health clinic is giving flu vaccinations this Saturday from 8:00 A.M.
to 4:00 P.M. There will be 6 booths where patients will be vaccinated.
At each booth 12 to 15 people can be vaccinated per hour. Which
could be the total number of people who will be vaccinated?
A. 250 B. 450 C. 650 D. 850
18.) A group of 219 volunteers from a high school spent one morning
cleaning up roadside trash. The volunteers collected a total of 2943
pounds of trash. Which is the best estimate of the average amount of
trash collected by each volunteer?
A. 7 lb. B. 10 lb. C. 15 lb. D. 27 lb.
19.) Television ratings reflect the number of households that are watching a
program. Each rating point corresponds to 994,000 television
households. The following chart shows the ratings for each of 5
networks during the 8:00 P.M. and 9:00 P.M. time slots.
Which of the following statements is TRUE?
A. More of the networks had better ratings at 8:00 P.M. than at
9:00 P.M.
B. The only network to have better ratings at 9:00 P.M. than at
8:00 P.M. was Network 3
C. Network 2 had the greatest change in ratings between the 2 time
slots.
D. The average change in ratings was about 2 points.
20.) The chart shows the U.S. first-class mail rates in 2000 and 2001.
What was the cost to mail an 8-ounce parcel in 2001?
A. $1.84 B. $1.87 C. $1.95 D. $2.38
21)
22.) Mrs. Swanson owned 72½ acres of land. She divided the land into 2.5-
acre sections. How many sections did she have?
A. 21 B. 25 C. 29 D. 31
23.) Laura spent $73.95 on books. Denise spent $85.72 on books. How
much more did Denise spend on books than Laura spent?
A. $11.77 B. $12.23 C. $12.77 D. $12.87
24.) Lisa drove for 2 days to reach her parents’ house. On her trip she spent
$39.50 for gasoline, $22.85 for food, and $63.98 for 1 night at a hotel.
How much did Lisa spend on her trip to her parents’ house?
A. $114.23 B. $116.33 C. $124.23 D. $126.33
25.)
A. 9 B. 12 C. 18 D. 20
26.)
Accept an estimated answer within the range of 70-80 square miles. The actual answer is 74 square miles. Accept work or an explanation related to separating the whole shape into sections and finding partial areas then adding those to find the total area.
Grade 7 Math Enrichment Packet Answer Key – Page 11