1.
Find the solution of 72 +
z
= 84 if the value of
z
can be selected from the set {4, 8, 12, 16}.
A.
12
B.
8
C.
4
D.
16
Hint
2.
Solve 3
x
= 18.
A.
6
B.
15
C.
21
D.
7
Hint
3.
The inequality 18 < 14 is ______.
A.
open
B.
complete
C.
false
D.
true
Hint
4.
The number sentence below is false. Make the sentence true by changing one symbol or number. Find the correct number sentence.
5
2
– 21 = 5 × 4 + 8
A.
5
2
– 21 > 5 × 4 + 8
B.
6
2
– 21 = 5 × 4 + 8
C.
5
2
– 21 < 5 × 4 + 8
D.
5
2
– 21 = 5 × 5 + 8
Hint
5.
Find a number for
x
that will make the equation true.
x
÷ 8
7
A.
any number less than or equal to 56
B.
any number greater than 56
C.
any number greater than or equal to 56
D.
56
Hint