Solving Equations/Writing Expressions and Equations Review

Mary has 24 books in her library. She bought several books at a yard sale over the weekend. She now has 58 books in her library. Write an equation that could be used to solve this problem if x represents number of books bought.

• x - 24 = 58

• 24 + x = 58

• 58 + x = 24

• 58 + 24 = x

Tags

CCSS.HSA.CED.A.3

Alyssa is baking a cake. The recipe calls for 7 cups of flour. She already put in 3 cups. Write an equation that could be used to solve this problem if x represents how many more cups she needs to add.

• 3 + x = 7
• 7 + 3 = x
• 3x = 7
• 7x = 3

Tags

CCSS.HSA.CED.A.3

A crew is picking up chairs in the gymnasium after an event. After clearing 217 chairs from the gym floor, 36 chairs still remain. Write an equation you could use to find the n , the number of chairs placed on the gym floor for the event.

• 217n = 36

• n - 217 = 36

• n + 217 = 36

• n/217 = 36

Tags

CCSS.HSA.CED.A.3

After dropping 5ºF, the temperature was 37ºF. Which equation models this situation, if d is the original temperature?

• d - 37 = 5

• d + 5 = 37

• d - 5 = 37

• d + 37 = 5

Tags

CCSS.HSA.CED.A.3

From the first quiz to the second quiz, a score dropped 8 points. The score on the second quiz was 39. Write an equation that could be used to solve this problem if x represents the first quiz score.

• 39 - 8 = x
• 8x = 39

• x - 8 = 39
• 8 - x = 39

Tags

CCSS.HSA.CED.A.3

You need the weight of your dog. On the scale together, you both weigh a total of 134 pounds. After putting the dog down, your weight is 105 pounds. Write an equation that could be used to solve this problem if x represents the weight of the dog.  

• 134 + x = 105
• 105 + x = 134
• 134 + 105 = x
• x - 105 = 134

Tags

CCSS.HSA.CED.A.3

Which quantity could go in the blank to make the equation below true?

x + 2x +____ = 5x

• 2

• 3

• 2x

• 3x

Tags

CCSS.6.EE.B.6

x - 62 = 123

How would you show your work to isolate the variable and solve the equation?

• Add 62 to each side. 
• Subtract 62 from each side.
• Multiply each side by 62.
• Add 123 to each side.

Tags

CCSS.6.EE.B.7

Solve for x:

x + 3 = 17

• x = 20
• x = 14
• x = 13
• x = 19

Tags

CCSS.6.EE.B.7

Solve for x:

x - 32 = 49

• x = 17
• x = 71
• x = 81
• x = 49

Tags

CCSS.6.EE.B.7