1.
Find the product 4 · 6 · 5 mentally.
A.
120
B.
20
C.
80
D.
100
Hint
2.
Simplify (
p
+ 16) + 24.
A.
16
p
+ 24
B.
p
+ 40
C.
40
p
D.
p
+ (16 · 24)
Hint
3.
Simplify 5 ·
x
· 10.
A.
15
x
B.
15 +
x
C.
50 +
x
D.
50
x
Hint
4.
Find 50 · (13 · 2) mentally.
A.
1300
B.
130
C.
1200
D.
750
Hint
5.
Name the property shown by the statement
a
+
b
+ 0 = 0 +
a
+
b
.
A.
Associative Property of Addition
B.
Commutative Property of Addition
C.
Additive Identity
D.
None of these
Hint