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