1.
Determine which equation is true by replacing the variable with 4.
A.
5 +
x
= 5
B.
5 +
x
= 4
C.
5 +
x
= 9
D.
5 +
x
= 10
Hint
2.
Identify the solution of 84 ÷
r
= 12.
A.
7
B.
6
C.
72
D.
21
Hint
3.
Which of the numbers is the solution of
x
÷ 2 – 4 = 10?
A.
30
B.
26
C.
28
D.
32
Hint
4.
Solve 24 = 2
m
mentally.
A.
12
B.
4
C.
22
D.
48
Hint
5.
For which equation is 5 the solution?
A.
x
+ 3 = 5
B.
5 +
x
= 5
C.
x
– 3 = 2
D.
3 –
x
= 2
Hint