Equations

What is the inverse operation of division?

• Division
• Multiplication
• Addition
• Subtraction

What is the inverse operation of subtraction?

• Subtraction
• Multiplication
• Division
• Addition

Which equation has w = 8 as the solution?

• 8w= 64
• 16w = 240
• 16 - w = 9
• 4 + w = 10

Which equation has x=9 as a solution

• 4 + x = 12
• 5x = 45
• 2x = 20
• x + 7 = 26

Three times as many as six is eighteen

• 3 + 6 = 18
• 3 x 6 = 18
• 6 x 3 = 9
• 18 = 6 x 3

What is the solution of r - 11 = 5

• 11

• 14

• 15

• 16

What is the solution of 42 = 7f

• 294

• 49

• 35

• 6

Kelly earned $20 for babysitting. She has also earned money by doing chores. Altogether, she has earned $100. How much did she earn doing chores?

• $5

• $20

• $80

• $120

Solve for k:
6k = 30

• k = 36
• k = 24
• k = 180
• k = 5

A solution is...

• A variable that results in a true sentence

• A mathematical sentence showing two expressions are equal.

• Numbers expressed using exponents

• The value for the variable in an equation.