Two-Step Equations Quiz

Three students disagree about the best and fastest method to solve the equation shown in one step. Which one is correct?

• Rashad, who wants to multiply by 3

• Ruby, who wants to multiply by 5/3

• None of the students are correct. They need to study their notes.

• Jess, who wants to divide by 1/5

How do you prove that your solution is correct? What is your success criteria for solving equations?

• I don't need to check: it's probably right!

• Substitution: plug the solution in for x and verify that the number sentence is true.

What is the FIRST step in solving this equation?

• subtract 3 from each side

• add three to each side

• subtract 2 from each side

• add 2 to each side

Level 3

Identify the steps to solve for b

• Add 6 to both sides and divide both sides by 5

• Add 6 to both sides and multiply both sides by 5

• Subtract 6 from both sides then multiply both sides by 5

• Subtract 6 from both sides then divide both sides by 5

Identify the steps to solve for b

• Add 6 to both sides and divide both sides by 5

• Add 6 to both sides and multiply both sides by 5

• Subtract 6 from both sides then multiply both sides by 5

• Subtract 6 from both sides then divide both sides by 5

• Add 7 to both sides

• Subtract 9 from both sides

• Divide both sides by 4

• Multiply both sides by 4

• 2

• 3

• 7

• Addition

• Subtraction

• Multiplication

• Division

• Check the solution by substituting back into the original equation

• Solve another equation

• Write a new equation

• There is nothing left to do