Solving One Step Equations (+/-)

What is the inverse operation of subtraction?

• Addition
• Subtraction
• Multiplication
• Division

Determine the value of w in the following equation by solving it algebraically:
6 + w = 29

• 22
• 35
• 23
• 36

What is the inverse operation of addition?

• Addition
• Subtraction
• Multiplication
• Division

Algebraically, determine the value of n in the following equation:
34.6 = r − 45

• 79
• 11
• 10.4
• 79.6

What is John's error in solving the equation below?
m + 20 = 32
− 20     
m = 32

• John did not use the inverse operation.
• John did not subtract 20 from both sides.
• John did not isolate the variable.
• John added 20 to both sides.

Put the following steps in the correct order:
How to Check a Solution to an Equation
i. Simplify by performing the given operation
ii. Re-write the original equation
iii. Substitute the value for the variable
iv. Identify if your simplified expression matches the other side of the equation.

• iv, iii, i, ii
• i, ii, iii, iv
• ii, iii, i, iv
• ii, iv, i, iii

What is the solution to the following equation?
6 = k − 12

• 18
• 6
• 2
• 20

Amy found the following equation to have a solution of 12.  Is she correct?  Use a complete check to determine if 12 is a solution to the equation.  If she is not correct, identify the correct solution.
Equation:   n − 15 = 3
Amy's Solution: n = 12

• No, the solution should be 5
• No, the solution should be 18
• Yes, she is correct
• No, the correct solution is not here

What is the inverse operation needed to solve for p?
765 = p − 254

• subtraction
• addition
• multiplication
• division

What is the error Tony made when solving for x?
x + 41 = 100
+41       +41
x = 141

• Tony did not use the inverse operation.
• Tony did not balance the equation
• Tony did not isolate the variable.
• Tony did not perform the same operation on both sides of the equation.