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