MAT 0002 REVIEW SECTION 3.4 (Add/Subtract fractions, LCD)
13) Find the perimeter of the parallelogram. Recall
that the perimeter of a figure is the distance
around the figure.
SHORT ANSWER. Write the word or phrase that best
completes each statement or answers the question.
Add or subtract as indicated. Write the answer in
simplest form.
3
3
+
1) 13 13
2)
3)
6
7
10 10
1
5
2
+
+
12 12 12
5)
12 36
3
+
+
17 17 17
6) -
24
9
6
27 27 27
8)
5
15
16 16
11)
14) Find the perimeter of the square. Recall that
the perimeter of a figure is the distance around
a figure.
9
1
5
+
+
11 11 11
7)
10)
6
centimeter
20
5
3
+
15 15
4)
9)
2
centimeter
20
3
mile
4
15) Jenna read
2
4
of her book on Monday, of
8
8
her book on Tuesday, and
1
of her book on
8
Wednesday. What part of her book has she
read?
21
7
19 19
16) The total length of a motor cycle race is
5
10
13 13x
mile. Chloe has completed
3
of a
6
2
of a mile. How
6
much does she have left to complete?
12 11
8
5
+
50 50 50 50
17) Marty jogged
3
of a mile from home and
10
then rested. Then he continued jogging
4
another
of a mile until he discovered his
10
Solve. Write the answer in simplest form.
12) Find the perimeter of the scalene triangle, a
triangle with all three sides a different length.
Recall that the perimeter of a figure is the
distance around a figure.
watch had fallen off. He walked back along
3
the same path for
of a mile until he found
10
his watch. Find how far he was from his
starting point.
3
centimeter
24
5
centimeter
24
Find the LCD of the list of fractions.
-18 10
,
18)
11 7
9
centimeter
24
1
19)
-1 1
,
2 10
20)
-5 2
,
14 10
21)
-5 -3
,
20 y
22)
1 1 1
,
,
10 12 10
23)
1
1
7
,
,
30 12 90
Write the fraction as an equivalent fraction with the
given denominator.
3
24) =
4 8
25)
3
=
7 35
26)
10
=
7
21
27)
2
=
3 30
28)
4
=
7 2639
29)
2
=
13 4836
30)
9
=
4 12
31)
2
=
11 55
32)
2
=
11 4169
2