Question

Explain how to using PEMDAS backwards helps you solve most equations?

Answer 1

@hannahp209

An equation is a math sentence with an equal sign.
It shows that two expressions are equal or the same
value.

Answer 2

n + 50 = 75 means that n + 50 must have the same value as 75

Answer 3

Strategies for solving equations:
• Guess and check
• Draw a picture
• Work backwards (Box Models)
2 9
Be sure to check your answer by substituting it back into the original equation.

Answer 4

Solving Equations
Using Inverse Operations
Golden Rules of Algebra
1.) Whatever you do to one side, you must do to the other
2.) Isolate the variable (get the variable by itself)
3.) Use inverse (opposite) operations to solve
Work backwards through Order of Operations
PEMDAS

Answer 5

Inverse Operations
Inverse Operations - operations that undo each other
(opposite operations)

Answer 6

1)What is the opposite of addition?

Answer 7

2) What is the opposite of multiplication?

Answer 8

3) What is the opposite of squared?

Answer 9

Answer Key:
1) subtraction
2) division
3) squared root

Answer 10

When we solve equations using inverse operations, we word backwards
through the order of operations (PEMDAS)