1.
Which statement illustrates the commutative property of addition?
A.
(5 + 3) + 6 = (3 + 5) + 6
B.
(5 + 3) + 6 = 8 + 6
C.
(5 + 3) + 6 = 14
D.
(5 + 3) + 6 = 5 + (3 + 6)
Hint
2.
Simplify 3 + 2(
xy
+ 3
z
) + 4
xy
.
A.
6
xy
+ 3
z
+ 3
B.
6
xy
+ 6
z
+ 3
C.
5
xy
+ 3
z
+ 3
D.
9
xy
+ 15
z
Hint
3.
Write an algebraic expression for the verbal expression: three times the sum of
x
and
y
increased by five times the product of
x
and 3
y
.
A.
3(
x
+
y
) + 5(
x
+ 3
y
)
B.
3(
xy
) + 5(
x
+ 3
y
)
C.
3(
x
+
y
) + 5(3
xy
)
D.
3
x
+
y
+ 5
x
(3
y
)
Hint
4.
Write a simplified expression to represent 5 times the sum of
x
and 3 increased by 10.
A.
5
x
+ 13
B.
18
x
C.
5
x
+ 25
D.
35
x
Hint
5.
Simplify 2
x
+ 5
x
+ 4(
x
+ 3).
A.
11
x
+ 3
B.
23
x
C.
11
x
+ 12
D.
14
x
Hint