Terms
Modeling
One-Step Equations
Two-Step Equations
Solving
100
In the expression 2x +3, the variable is:
x
100
Which expression is modeled by the picture?
2x+4
100
Which value of x will keep the scale balanced?
3
100
What is the first step to solve the equation
Add 21 to both sides
100
What is the solution to
x/3 = -4?
x = -12
200
The numerical coefficient in the expression 5y-4 is:
5
200
Model 4x-3 using cups and counters
200
How many counters do we put in the cup to make the equation true?
8
200
The first step in solving 4x + 5 = 21 would be subtracting 5 from both sides. What is the second step?
Divide both sides by 4
200
Solve 4k - 4 = 16
k = 5
300
What is the constant term in this expression:
7r-6
-6
300
Which equation is represented by the algebra tiles?
2x - 3 = 5
300
Is x=5 a solution to the equation 37 - x = 42?
No! x = -5 is the solution
37 - (-5)
=37 + (+5)
=42
300
What is the solution to the equation represented by the model below?
x = 3
300
Solve 4 + 9r = 31
r = 3
400
A mathematical statement with two expressions that have the same value is called a/an
Equation
400
Which equation is represented by the tiles?
3x +2 = 11
400
What is the solution to the equation r -10 = 14?
r = 24
400
What is the solution to
3r - 7 = 20?
r = 9
400
Solve x/3 - 2 = 5
x = 21
500
An operation that undoes another operation is called a/an:
Opposite Operation
500
What is the value of 'd' in the equation above?
d = 7
500
What is the solution to the equation x/7 = 2?
x = 14
500
Is x = 6 a solution to the equation
8x + 8 = 25?
No! Replace x with 6 to get:
8(6) + 8
=48 + 8
=56
500
Dean is 5 years less than twice Terry's age. If Terry is 22, how old is Dean? Write an equation and solve.
Use 'd' to represent Dean and 't' for Terry
d = 2t - 5
d = 2(22) - 5
d = 44 - 5
d = 39