Introduction - Solve Equations with Decimals

What is the main concept of solving equations with decimals

We use the same methods as solving equations with whole numbers

What is the main idea of solving one step equations

Isolate the variable using the inverse operation

Why do we do the same operation to both sides

To keep the equation balanced

What is the definition of an equation

A math sentence with an equal sign that shows two sides are the same

What is the definition of an inverse operation

An operation that undoes another operation

Example solve z + 2.5 = 7.5

z = 5

Example solve 4.5x = 9

x = 2

Example solve p ÷ 2.5 = 6

p = 15

What rule should you remember when solving equations with decimals

Use the opposite operation to isolate the variable

What should you always do after solving

Check your work by substituting the solution back into the original equation

What does 4.5x mean

4.5 × x

What does x + 2.5 mean

x plus 2.5

What does r - 1.2 mean

r minus 1.2

What does n ÷ 2.5 mean

n divided by 2.5

When both sides of an equation are equal

You have the correct solution