1.
Find the value of
r
in the following equation.
2 + 6
r
= 3
r
- 1
A.
-1
B.
2
C.
6
D.
Hint
2.
Find a solution to the equation using backtracking.
A.
x
= 8
B.
x
= 9
C.
x
= 11
D.
x
= 10
Hint
3.
Find a solution to the equation using guess-check-and-improve.
–25 – 3
k
= –7 + 3
k
A.
k
= 1
B.
k
= 4
C.
k
= –3
D.
k
= –6
Hint
4.
Bruce was filling jugs from a basin of water. When he had filled four jugs, 14 liters of water were left in the basin. When he had filled eight jugs, 4 liters of water were left in the basin. How many liters of water can fill one jug?
A.
2.5 liters
B.
1 liter
C.
1.5 liters
D.
2 liters
Hint
5.
Ken and Mali put candies in bags to give away at Ken's birthday party. They started with an equal number of candies and put the same number in each bag. Ken filled nine bags and had three candies left. Mali filled eight bags and had ten candies left. How many candies were in each bag?
A.
9 candies
B.
7 candies
C.
8 candies
D.
10 candies
Hint
6.
Which equation has a solution of
x
= –4?
A.
10
x
– 1.5 = –17.5 + 6
x
B.
6
x
+ 17 = –1 + 10
x
C.
1 – 10
x
= –17 + 6
x
D.
6
x
+ 17 = 1 – 10
x
Hint
7.
Evaluate the expression.
46 – (12.3 + 20.9)
A.
54.6
B.
12.8
C.
79.2
D.
8.6
Hint
8.
Simplify 20
y
– (6
y
– 2
z
)
A.
–14
y
– 2
z
B.
14
y
– 2
z
C.
–14
y
+ 2
z
D.
14
y
+ 2
z
Hint
9.
Using
n
, find the expression for this
Think of a Number
trick.
Think of a number.
Multiply by 2.
Add 4.
Divide by 2.
Add 6.
Subtract the number you started with.
A.
B.
C.
D.
Hint
10.
What is the final answer to this
Think of a Number
trick?
Think of a number.
Multiply by 4.
Subtract 8.
Divide by 2.
Add 4.
A.
the answer is 2 more than the number you started with
B.
the answer is –2 times the number you started with
C.
the answer is 2 times the number you started with
D.
the answer is 2 less than the number you started with
Hint