Simplifying Expressions in Algebra

What is the simplified expression represented by the algebra tiles shown?

• 3x + 5

• x + 4

• -2x + -1

• 3x + -2x + 5 + -1

Which mat is greater? HINT: You may want to draw it out or make a table to simplify.

• Mat A

• Mat B

• They are equal

• We can't tell

What action should be written in the box outlined in blue?

HINT: Draw the tiles to double check.

• add 4 to both sides

• remove x from both sides

• remove zero pairs from both sides

• add x to Mat A

How many sets of zero pairs can be made with the algebra tiles shown?

• 0

• 1

• 2

• 3

• subtract 5 from 9

• subtract 9 from 5

• divide 12 by 4

• multiply 12 times 4

Use order of operations to evaluate this algebraic expression.

6x + 2 + 4x + 2

• 2x + 4

• 10x + 4

• 10x

• 4