One-Step Equations using Addition and Subtraction

The video tutorial by Mrs. C explains how to solve one-step equations using addition and subtraction. It emphasizes the importance of keeping equations balanced, like a scale, and provides step-by-step instructions for isolating variables. The tutorial covers solving equations with both positive and negative variables and highlights the process of checking answers by substituting values back into the original equations.

Why is it important to show your work when solving equations?

• To make the solution look longer

• To ensure the equation is balanced

• To avoid using mental math

• To confuse the teacher

What is the first step in solving an equation using addition?

• Guess the value of the variable

• Identify and circle the variable

• Subtract the constant from both sides

• Add the constant to both sides

How do you check if your solution to an equation is correct?

• By adding the solution to both sides

• By substituting the variable with the solution in the original equation

• By multiplying the solution by the constant

• By guessing another number

What operation should be used to solve an equation where a number is subtracted from the variable?

• Addition

• Multiplication

• Division

• Subtraction

When solving an equation with subtraction, what must you do to keep the equation balanced?

• Add the same number to both sides

• Subtract the same number from both sides

• Multiply both sides by the same number

• Divide both sides by the same number

How do you handle an equation where the variable has a negative value?

• Divide the variable by -1

• Subtract the variable from both sides

• Add the variable to both sides

• Multiply the variable by -1

What is the final step in solving one-step equations?

• Complete the math calculations

• Check the solution

• Undo the operation

• Identify the variable