Adding Integers with Algebra Tiles

What sum does the set of tiles model?

• (+2) + (-3) = -1

• (+2) + (-3) = +1

• (-2) + (+3) = -1

• (-2) + (+3) = +1

What sum does the set of tiles model?

• (-4) + (-2) = +6

• (+4) + (+2) = -6

• (+4) + (-2) = -6

• (-4) + (-2) = -6

What sum does the set of tiles model?

• (-4) + (+3) = -1

• (+4) + (-3) = -1

• (+4) + (-3) = +1

• (-4) + (+3) = +1

What sum does the set of tiles model?

• -7

• +7

• +1

• -1

Look at the model. Which of the following algebraic expressions could it represent?

• 3x + 4 + 2x + 1

• 7x + 3x

• 3x + 2x

• 4 + 1

Look at the model. Which of the following algebraic expressions could it represent?

• 2x + 5 + 4x + 4

• 2x + 3 + 4x + 3

• 3x + 3x

• 2 + 4

Look at the model. Which of the following algebraic expressions could it represent?

• 5x - 1 + 2x + 3

• 5x + 5 +2x + 3

• 5x + 1 + 2 + 3

• 5x - 1 + 2x + 3x

Look at the model. Which of the following algebraic expressions could it represent?

• 3x - 2 - 1 + 6

• 3x - 2 - 1 + 6x

• 3x - 2 - x + 6x

• 3x + 2x - x - 6

Look at the model. Simplify the expression it represents by adding like terms.

• 5x + 2x

• 7x + 2

• 7x + 3

• 5x + 5

Look at the model. Which of the following algebraic expressions could it represent?

• 3x + 4 + 2 + 2 

• 3x + 4 + 2x + 2 - x - 1

• 3x - 4 + 2 - 2 -x

• 3x + 4 + 2 + 2  - 1 - 1