Download MAT 0002 Section 3.5 (Add/Subtract Fractions, LCD

MAT 0002 Section 3.5 (Add/Subtract Fractions, LCD)
Name___________________________________
SHORT ANSWER. Write the word or phrase that best
completes each statement or answers the question.
18)
Add or subtract as indicated. Write the answer in
simplest form.
5
2
+
1)
14 15
2)
4)
Insert < or > to form a true sentence.
14
3
19) 15
10
7 1
8 6
3) -
20)
9
9
4 11
3
1
5 15
6) -
4
6
+
95 55
12
13
21) -
1
1
+
4 20
5) -
4x 5x 5
+
3
7
6
22)
6
19
3
8
8) -5t +
10)
10
19
5
9
for x =
-3f
6
+
5
13
25) -3x + y
9)
-
Evaluate the expression for the given replacement values.
Write the answer in simplest form.
2
4
for x = , y =
23) x + y
3
5
24) x + y
7)
9
10
for x =
1
7
11)
2 6
+
9 x
12)
9
7
+
10 6
13) -
4
6
,y=
25
5
26) xy
for x =
10
15
,y=
90
8
27) x ÷ y
for x =
5
25
,y=
10
2
5
-7
11
4x 5x
+
7
8
1
1
,y=
2
2
Solve. Write the answer in simplest form.
28) Find the perimeter of the parallelogram.
3
centimeter
5
1
centimeter
2
4
4
21 3x
29) Find the perimeter of the triangle.
Perform the indicated operations. Write the answer in
simplest form.
2 5 3
- +
14)
5 3 4
15)
x x 2x
+ +
2 6 24
16)
1
7
5
+
3 36 6
17)
1 1
z
+ +
4 8 16
11
feet
90
5
36
feet
11
feet
42
1
30) A construction crew replaced
1
mile of sewer
5
line in the process of updating a section of a
31
road. Another crew replaced
mile of
120
sewer line while working on the same project.
How much longer was the sewer line that the
second crew replaced?
31) Given the following diagram, find L, its total
length.
x=
1
9
1
inch, y =
inch, z = inch
4
16
2
32) The circle graph shows the fraction of books
read by grades one through five. What fraction
of books was NOT read by the third and
second grades?
13
100
3
20
1
4
21
100
13
50
2