1.
Determine which equation is true by replacing the variable with 4.
A.
5 +
x
= 4
B.
5 +
x
= 10
C.
5 +
x
= 9
D.
5 +
x
= 5
Hint
2.
Solve 16 =
k
+ 10 using mental math.
A.
10
B.
8
C.
9
D.
6
Hint
3.
For which equation is 11 the solution?
A.
29 –
h
= 18
B.
11 =
h
+ 7
C.
15 –
h
= 26
D.
h
– 5 = 11
Hint
4.
Solve 24 = 2
m
mentally.
A.
4
B.
12
C.
22
D.
48
Hint
5.
For which equation is 5 the solution?
A.
5 +
x
= 5
B.
x
+ 3 = 5
C.
3 –
x
= 2
D.
x
– 3 = 2
Hint