1.
Find the product 4 · 6 · 5 mentally.
A.
100
B.
20
C.
120
D.
80
Hint
2.
Simplify (
p
+ 16) + 24.
A.
p
+ (16 · 24)
B.
16
p
+ 24
C.
p
+ 40
D.
40
p
Hint
3.
Simplify 6 +
b
+ 3.
A.
b
+ 9
B.
9
b
C.
9
D.
3 +
b
Hint
4.
Name the property shown by the statement
a
+
b
+ 0 = 0 +
a
+
b
.
A.
None of these
B.
Associative Property of Addition
C.
Commutative Property of Addition
D.
Additive Identity
Hint
5.
Simplify (
r
+ 6) + 27.
A.
r
+ 33
B.
33
r
C.
r
+ 21
D.
6
r
+ 27
Hint