Equations and Expressions

Select all the equations where x =5 is a solution.

• 20 is the product of x and 4

• x is the square root of 25.

• the sum of x and a 6 is 11.

• x is the product of 4 and 1

• x is the quotient of 4 and 1

What is the solution to this equation represented in the tape diagram?

• x = 2

• x = 1

Lalie's food trough had 40 pounds of scraps in it. After she eats x pounds of scraps, there were 24 pounds left. Select all the equations that represent this situation.

• 40 - 24 = x

• 24 + 40 = x

• 40 - x = 24

• x = 40 + 23

• x = 40 - 24

Ravi has 7 bracelets, each y meters in length. When she ties the bracelets together, they measure 42 meters. Select the equations that represent this situation.

• 7 + y = 42

• 7y = 42

• 42 - 7 = y

• y = (41) \ 7

Which equation is represented in this tape diagram?

• 21 = 7 + 3

• 21 = 7 x 3

• 3 + 3 + 3 +3 = 21

• 3 x 7 = 10

Select ALL equations that are represented in this diagram.

HINT: There is more than one equation representing the diagram!

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Which equation represents this tape diagram?

• 4(x-1) = 28

• 28(x-1) = 4

• 4x + 1 = 28

• x-1 = 28

What value of x makes the equation true?

• 5

• 6

• 7

• 8

What is the value of x in the equation 25 + x = 80 ?

• 55

• 105

• 35

• 25

2d + 9 when d = 1

• 5.5

• 5

• 11

• 10