Welcome to the CLAST Practice Test'

1
Welcome to the CLAST Practice Test.

• Each question has four answers provided. Choose
  the correct answer by pressing its corresponding
  button.
• Click here to begin.

2
1.

• Round 84,781 milliliters to the nearest thousand
  milliliters.

84,700 ml
84,780 ml
84,800 ml
85,000 ml
3
2.

• Select the statement that is true for the figure
  shown. (The measurement of angle A is
  represented by x.)

B
C
x
A
Triangle ABC is isosceles
Triangle ABC is equilateral
Triangle ABC is scalene
Triangle ABC is obtuse
4
3.

• Identify the units that would be appropriate for
  measuring the diameter of a circular swimming
  pool.

Square feet
meters
gallons
Cubic inches
5
4.

• Select the figure that show supplementary angles.

B.
C.
D.
A.
6
5.

• Select the formula for computing the volume of
  the figure below, which is formed by joining 3
  cubes.

7
6.

• Study the given information.

4 sides, 2 triangles S360o
5 sides, 3 triangles S540o
6 sides, 4 triangles S720o
Calculate S, the sum of the interior angles of a
10-sided convex polygon.
1440o
1260o
1800o
1000o
8
7.

• Select the statement that is true for the
  triangles shown.

c
b
a
z
x
y
d
e
x y
x z
ab be ac cd
ad ab cd be
9
8.

• Steve is going to use four wires to support a
  newly planted palm tree in
• his back yard. Each wire is attached to the
  trunk of the tree 4 feet
• above the ground, and attached to the ground a
  distance of 3 feet from
• the trees trunk. What is the total length of
  all four wires?

15 feet
20 feet
40 feet
48 feet
10
9.

• What is the surface area of a rectangular solid
  that is 2 yards long, 1 yard high and 5 yards
  wide?

10 square yards
20 square yards
34 square yards
64 square yards
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10.

• What will it cost to carpet a 12 ft. x 30 ft.
  room if the carpet
• costs 8 per square yard?

40
320
120
960
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End of test.
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Correct Answer 1

• To round 1. Locate the place value you are
  rounding to
• 2. Look at the digit to the
  right of the place value
• 3. If the digit is 4 or less
  leave the digit in the place value alone
• If the digit is 5 or more,
  add 1 to the digit in the
• place value
• 4. Change all digits
  following the place value to 0s
• 84,781 rounded to the nearest thousand
• 1. 4 is in the thousands place
• 7 is the digit to the right,
• Since 7 is 5 or more, add 1 to the 4
• Change all digits following the place value to
  0s
• 84,781 rounded to the thousands is 85,000

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Correct Answer 2
An equilateral triangle has all sides of equal
length and all angles are 60o. An isosceles
triangle has two sides of equal length, and the
angles opposite those sides are of equal
measure. A scalene triangle has all three sides
of unequal length. An obtuse triangle has one
obtuse angle (greater than 90o) The figure shows
angle y is a supplement of 125o therefore the
measure of y is 55o. Supplementary angles add to
180 degrees. Also, angle z is a supplement of
120o, therefore the measure of z is 60o. Since
the sum of the angles in a triangle is 180o, the
measure of angle x is 65o. The correct answer is
triangle ABC is scalene.

15
Correct Answer 3
The diameter of a circle is a linear measurement.
The diameter is the measure of the line segment
that passes through the center of the circle and
has endpoints on the circle. Meters, feet,
inches, miles, etc. are linear measurements and
are used for perimeter, circumference, and
lengths of sides of polygons. Squared meters,
squared feet, and other squared units are used
for area. Cubic inches, cubic meters, and other
cubic units are used for volume. Gallons, liters,
pints, etc. are used for capacity.
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Correct Answer 4
Supplementary angles are angles whose sum is
180o. A straight line is called a straight angle
whose measurement is 180o.
The horizontal line is a straight angle, whose
measure is 180o. The measure of angle A measure
of angle B 180o .
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Correct Answer 5
To find the volume of any rectangular prism
(box), V length x width x height. A cube has
all sides equal. V s x s x s or s3 In the
figure, 3 cubes are joined so the formula for the
volume is V 3 s3.

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Correct Answer 6

• In this problem, notice that
• The number of triangles is two less than the
  number of sides.
• S is the number of triangles multiplied by 180o.
• For a 10-sided convex polygon there and 8
  triangles.
• S 8 x 180o
• S 1440o

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Correct Answer 7
The figure given shows two triangles which are
similar triangles. With similar triangles, the
ratios of corresponding sides are equal.
c
Triangles acd and abe are similar Triangles.
They have the same shape but differ in size.
b
a
d
e
ab (small triangle) corresponds with ac (large
triangle) and be (small triangle) corresponds to
cd (large triangle). The ratios of corresponding
sides are equal. ab be ? small triangle
values ac cd large triangle values
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Correct Answer 8
In this problem, the tree, the ground and the
wire form a right triangle.
Using the Pythagorean Theorem a2 b2 c2, we
can find the length of the wire. 42 32 c2 16
9 c2 25 c2 5 c, length of wire Since we
have four wires the total length is 20 feet.
c wire
Tree a 4 ft
Ground b 3 ft
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Correct Answer 9
One end has area 5 x 1 5 sq. yd. Since we have
2 ends, the area of the ends is 10 sq. yds. The
front and back side of the solid have the same
areas 2 x 1 2 , so the area of the front and
back sides is 4 sq. yds. The top and bottom have
the same areas 2 x 5 10 so the area of the top
and bottom is 20 sq. yds.
A rectangular solid is a box with 6 sides.
1 yard
5 yards
2 yards

The total surface area is 10 4 20 34 square
yards
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Correct Answer 10
To find the cost of carpeting the room, first
find the area of the room. Area length x
width A 30 x 12 360 square feet. Since the
price of the carpet is given as 8 per square
yard, We must convert the area of the room from
square feet to square yards. (Note that
converting the original values from feet to yards
would work too.) 1 yard 3 feet 1 square yard
1 yard x 1 yard 3
feet x 3 feet 9 square feet We can use a
proportion to find the area of the room in square
yards. 1 square yard x square yards
9 square feet 360 square
feet 9x
360 The area of the room is 40 square yards.
x 40 To find the cost multiply
8 x 40 320 to carpet the room.
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Incorrect.