1.
Which of the numbers is the solution of 3
d
= 12?
A.
6
B.
3
C.
4
D.
2
Hint
2.
Determine which equation is true by replacing the variable with 2.
A.
6
x
= 8
B.
6
x
+ 2 = 10
C.
2
x
+ 2 = 8
D.
6
x
+ 4 = 16
Hint
3.
Which of the numbers is the solution of
x
÷ 2 – 4 = 10?
A.
26
B.
32
C.
30
D.
28
Hint
4.
Solve 3 = 9 –
n
using mental math.
A.
9
B.
6
C.
7
D.
3
Hint
5.
Solve 24 = 2
m
mentally.
A.
48
B.
22
C.
4
D.
12
Hint