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 and solve 2x-3=5 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? (red is positive)
2x + 6 = 24
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
Jeremy collects hockey cards and baseball cards. The number of hockey cards he has is 21 more than twice the number of baseball cards. Jermey has has 75 hockey cards.
a) Write an equation to represent this situation.
b) How many baseball cards does he have?
a) 2b + 21 = 75
b) b = 27. He has 27 baseball cards
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?
a) Write an equation
b) solve.
d = 2t - 5
Use 'd' to represent Dean and 't' for Terry
d = 2t - 5
d = 2(22) - 5
d = 44 - 5
d = 39