Mr. Cefalo

Pre-Algebra Standard 3 Objective 2: Students will solve one step equations. The students will use addition and subtraction to solve the equations.

When trying to solve a one step equation it is important to know how to undo an operation. You are to use inverse operations to solve each equation.

* If the variable has a number added then you subtract that number from both sides of the equation.

* If the variable has a number subtracted from it then you add that number to both sides of the equation.

* If the variable has a number multiplied to it then you divide that number to both sides of the equation.

* If the variable has a number divided by it then you multiply that number to both sides of the equation.

Go to the following sites below. These sites will help you practice solving equations using addition and subtraction.

Addition Beat the Clock

Subtraction Beat the Clock

On this webpage below go through the activity. Complete 10 problems and report your score. You can try this as many times as you would like to get the best score. Once you have your best score print out or email your results to the teacher.

Addition equations with 1 digit integers

Subtracting Equations

If you get done early try out the following resource. It is solving multi-step equations instead of one step equations.

Algebra Balance Scales

* If the variable has a number added then you subtract that number from both sides of the equation.

* If the variable has a number subtracted from it then you add that number to both sides of the equation.

* If the variable has a number multiplied to it then you divide that number to both sides of the equation.

* If the variable has a number divided by it then you multiply that number to both sides of the equation.

Go to the following sites below. These sites will help you practice solving equations using addition and subtraction.

Addition Beat the Clock

Subtraction Beat the Clock

On this webpage below go through the activity. Complete 10 problems and report your score. You can try this as many times as you would like to get the best score. Once you have your best score print out or email your results to the teacher.

Addition equations with 1 digit integers

Subtracting Equations

If you get done early try out the following resource. It is solving multi-step equations instead of one step equations.

Algebra Balance Scales