Inverse Operations
Presentation
•
Mathematics
•
9th Grade
•
Practice Problem
•
Easy
Standards-aligned
Rebecca Louvain
Used 121+ times
FREE Resource
3 Slides • 16 Questions
1
Inverse Operations
2
What are inverse operations?
Inverse means opposite.
When we use inverse operations to solve for a variable, we need to use the opposite operation of the one being used in the equation.
Addition and Subtraction are opposites.
Multiplication and Division are opposites.
3
Solving equations
To solve for a variable, we need to get the variable by itself on one side of the equal side.
To get rid of the numbers with the variable, we use inverse operations on both sides of the equal sign.
4
Poll
What's the inverse operation of addition?
Subtraction
Multiplication
Division
5
Poll
What should you do to solve: x+7=25
add 7 on both sides
add 25 on both sides
subtract 7 on both sides
subtract 25 on both sides
6
Poll
What should you do to solve: x+42=-96
add 42 on both sides
add -96 on both sides
subtract 42 on both sides
subtract -96 on both sides
7
Multiple Choice
Solve the equation: x+4=23
27
19
92
5.75
8
Poll
What's the inverse operation of multiplication?
addition
subtraction
division
9
Poll
What should you do to solve: 5x=65
multiply by 5 on both sides
multiply by 65 on both sides
divide by 5 on both sides
divide by 65 on both sides
10
Poll
What should you do to solve: 12h=84
multiply by 12 on both sides
multiply by 84 on both sides
divide by 12 on both sides
divide by 84 on both sides
11
Multiple Choice
Solve the equation: 11k=99
110
88
9
1,089
12
Poll
What's the inverse operation of subtraction?
addition
multiplication
division
13
Poll
What should you do to solve: w-7= 24
add 7 on both sides
add 24 on both sides
subtract 7 on both sides
subtract 24 on both sides
14
Poll
What should you do to solve: y-15=-37
add 15 on both sides
add 37 on both sides
subtract 15 on both sides
subtract 37 on both sides
15
Multiple Choice
Solve the equation: t-3=12
15
9
36
4
16
Poll
What's the inverse operation of division?
addition
subtraction
multiplication
17
Poll
What should you do to solve: y/6=-11
multiply by 6 on both sides
multiply by -11 on both sides
divide by 6 on both sides
divide by -11 on both sides
18
Poll
What should you do to solve: x/4=23
multiply by 4 on both sides
multiply by 23 on both sides
divide by 4 on both sides
divide by 23 on both sides
19
Multiple Choice
Solve the equation: t/3=9
12
6
3
27
Inverse Operations
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