Adding Variable Expressions

d + 3 = 8

d = ?

• d = 3

• d = 8

• d = 5

• d = 11

5 + g = 6

g = ?

• g = 5

• g = 1

• g = 11

• g = 9

a - 1.1 = 2.3

a = ?

• a = 3.4

• a = 3

• a = 1.2

• a = 1.1

Which of the following is an equivalent expression?

• 11m + 6c

• 10m + 3c + 5c

• 10m + 5c

• 15mc

Add these expressions
(3x+15) + (4x+13)

• 7x+ 28

• 35x

• x+2

(2x - 6) + (4x - 4)

• 6x + 10

• 6x - 10

• 6x + 2

Green tiles represent x and yellow tiles represent 1. Simplify.

• 5x + 6

• 11x

• 11

• 6 - 5x

Green tiles represent x and yellow tiles represent 1. Which expression is shown here?

• 3x + 2 + 2x + 6

• 3x + 2x + 2x + 6x

• 3 + 2 + 2 + 3

• 5x + 8

What expression represents this group of tiles?

• 2x + 4

• x + x + 1 + 1

• 2x +1

• x + 4

Look at the model. Which of the following algebraic expressions could it represent? Green represents x and yellows represent 1.

• 3x + 4 + 2x + 1

• 7x + 3x

• 3x + 2x

• 4 + 1