Expressions and Equations Review

• the number of stop signs

• the number of sides on the stop sign

• the total perimeter of the stop sign

• the length of each side of the stop sign

x - 62 = 123
How should 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.

The area of a rectangular deck is 125 square feet. The width of the deck is 25 feet. Write an equation and solve to find the length.

• 25x=125,
  x = 5 feet

• x+22=125,
  x = 20 feet

• x-25=125
  x=150 feet

• 25x=125
  x=3,125 feet

Select all the equations represented by this tape diagram.

• 3+3+3+3=?

• ?=4⋅3

• ?=3⋅3⋅3⋅3

• 4÷3=?

• 4=?÷3

Select all the expressions that are equal to 3⁴?

• 81

• 3 x 3 x 3 x 3

• 3 x 4

• 27 x 3

• 9 x 9

Select all the equations where y = 6 is a solution.

• 6y = 36

• $\frac{18}{y}=\ 3$

• 2 ( y + 3) = 15

Select all the expressions that are equivalent to 24x- 12y.

• 12 (12x - y)

• 12 (2x - y)

• 12 ( 2x + y)

• 2 (22x - 10y)

• 2 (12x - 6y)

3/10 of the students in band play brass.

If there are b students in band, write an expression for the  number of sixth graders in brass in terms of b.

Which expression is equivalent to (3)(3)(3)(3)(3)

• 3⁵

• 5(3¹)

• 5³

• 3¹

• 3² times 3³

Which of the following equations does NOT represent how to find the perimeter, P, of the following shape?

• P = LW + LW

• P= 2L + W + W

• P= 2L + 2W

• P= L + L + W + W