1.
Which of the numbers is the solution of 3
d
= 12?
A.
2
B.
4
C.
6
D.
3
Hint
2.
Solve 16 =
k
+ 10 using mental math.
A.
6
B.
9
C.
8
D.
10
Hint
3.
Identify the solution of 84 ÷
r
= 12.
A.
6
B.
21
C.
72
D.
7
Hint
4.
Which of the numbers is the solution of
x
÷ 2 – 4 = 10?
A.
28
B.
26
C.
32
D.
30
Hint
5.
Solve 24 = 2
m
mentally.
A.
4
B.
48
C.
22
D.
12
Hint