

Review One and two-step equations
Presentation
•
Mathematics
•
7th Grade
•
Medium
Standards-aligned
Bertha Ochoa
Used 183+ times
FREE Resource
6 Slides • 10 Questions
1
Review One and two-step equations
7th Grade

2
California 7th Grade Standards
Expressions and Equations 7.EE Major Clusters
Use properties of operations to generate equivalent expressions. (7.EE.1–2 )
Solve real-life and mathematical problems using numerical and algebraic expressions and equations. (7.EE.3–4 )
3
One-Step Equations
Solve means find the solution, or find the number that stands for the variable.
4
Inverse Operations
The opposite of
add is subtract
subtract is add
multiply is divide
divide is multiply
5
Multiple Choice
Solve the algebraic equation for p.
p+8 = 12
4
20
1.5
96
6
Multiple Choice
Which method can be used to solve the algebraic equation below?
z - 6 = 13
Subtract 6 from both sides of the equation
Add six to both sides of the equation
Subtract 13 from both sides of the equation
Add 13 to both sides of the equation
7
Multiple Select
Select the two methods that can be used to solve the algebraic equation.
-2x = 12
Add -2 to each side
Multiply each side by -2
divide each side by -2
Multiply each side by -1/2
Add -1/2 to each side
8
Multiple Choice
How would you solve the equation above?
Multiply both sides of the equation by 1/3
Multiply both sides of the equation by 3
Divide both sides of the equation by 3
Divide both sides of the equation by -6
9
For greater accuracy use a direction table.
Draw the table and ask yourself...
What is the variable?
What is the operation being applied to the variable?
What is the second operation?
What is the output or end result (equal to)?
Work backwards and do the inverse operation on the left hand side of the table.
10
Example: 10x - 5 = 195
11
Multiple Choice
-4b+12=24
b = 12
b = -4
b = -3
b = 15
12
Multiple Choice
-30 - 5x = 120
13
Multiple Choice
Solve.
y = 15
y = 85
y = -15
y = -2
14
Multiple Choice
65+3b=−32
29
−29
21
−21
15
Multiple Choice
Solve.
m = 0
m = 12
m = -12
m = 1
16
Poll
How do you feel about solving equations with one variable?
They are easy to solve
I have trouble with one-step equations
I have trouble with two-step equations.
I do not understand anything.
Review One and two-step equations
7th Grade

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