Equations

What is the inverse operation of adding?

• Adding

• Subtracting

• Multiplying

• Dividing

What is the inverse operation of multiplying?

• Adding

• Subtracting

• Multiplying

• Dividing

What is the inverse operation of multiplying?

• Adding

• Subtracting

• Multiplying

• Dividing

Dan has 9 sticky notes left. I have 9 times as many as Dan. How many sticky notes do I have?

• 81

• 9

• 72

Solve for x:

• x = 20
• x = 7
• x = 10
• x = 3

Which of the following is an equation?

• 6x + 2x - 6
• 6x² + 10 = 25
• 6x² + 10 - 25
• 10y - 6 + 34u

Solve for x:
3x = 6

• 2
• 18
• 3

An equation is...

• a problem that contains at least one variable and at least one operation; no equal sign

• a mathematical sentence showing two expressions are equal.

• The solution for a variable

• The value that results in a true sentence

The objective when solving an equation is to....

• isolate the variable.
• check the solution.
• guess and check.
• Combine Like Terms.

Which equation has x =2 as a solution?

• 3 + x = 10
• 11 + x = 13
• 4x = 32
• 5x =25