one-step addition/subtraction equations

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

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

Together, Shaquille Oatmeal and Jarrod the Rap God have 101 2/8 blue bananas. If Shaquille Oatmeal has 27 1/4 fewer bananas than Jarrod the Rap God, how many blue bananas does Jarrod have? Which algebraic equation best matches the scenario?

• 101 2/8 = J - 27 1/4

• 24 1/4 - J =

  101 2/8

• J - 27 1/4 =

  101 2/8

• 101 2/8 + 27 1/4 = j

z - 9 1/3 = 1 5/9

• 10 6/12

• 21

• 8 4/9

• 10 8/9

Solve for the variable.

5 1/2 = b - 12 1/4

• i = 17 2/4

• i = 17 3/4

• i = 7 0/4

• i = 13

Solve for the variable.

a - 27 = 41

• a = 68

• a = -41/27

• a = -1107

• a = 14

67.9 = c - 4.45

• 72.35

• 68.35

• 71.39

• 71.89

Rylan's mom went shopping to buy Rylan and Phoebe basketball shoes. She bought Rylan a pair that was $30.82. Together, she spent $87.63. What was the cost of Phoebe's shoes? Choose the algbraic equation that fits the scenario.8

• 30.82 + p = 87.63

• p - 30.82 = 87.63

• 87.63 - p = 30.82

• 87.63 + 30.82 = p

Choose the correct equation for the situation.

Jane is 3 years younger than Sam. If Jane 12, how old is Sam?

• j - 3 = 12

• s - 3 = 12

• s + 3 = 12

• j + 12 = 3

On Monday Homeroom 104 turned in 64 canned goods. This is 17 less than the number of canned goods turned in by Homeroom 106. Which equation best matches the situation?

let h = homeroom 106

• h - 17 = 104

• h + 17 = 64

• h - 17 = 64

Izan's youngest relative is 5 years old. This is 79 years less than the age of his oldest relative. What is the age of the oldest relative?

Which subtraction equation represents the situation?

• r + 5 = 79

• r - 5 = 85

• r - 5 = 79