Expressions Review

Expressions Review

Please make sure you have the following materials.

Paper

Pen or Pencil

Calculator

Vocabulary Review

What is a variable?

Answer

A variable is a letter that represents an unknown number.

Vocabulary Review

What is the coefficient in an expression?

Answer

The coefficient is the number in front of the variable and is multiplied to the variable.

Vocabulary Review

What is the constant in an expression?

Answer

The constant is the number that stands alone. It is not attached to a variable.

Vocabulary Review

What is the DISTRIBUTIVE PROPERTY?

ANSWER

The DISTRIBUTIVE PROPERTY states that you multiply each term inside the parentheses by the number outside the parentheses.

Example:

3( 2x + 5)

6x + 15

Vocabulary Review

What is perimeter?

How do you find perimeter?

Answer

Perimeter is the distance around a shape.

You find perimeter by ADDING up the measures of all the sides.

Vocabulary Review

What does "combine like terms" mean?

Answer

When you combine like terms you:

1. combine all terms with the same variables

2. combine all constants (numbers without variables)

REMEMBER to BOX and CIRCLE

DIRECTIONS

1. Please copy each question down on paper.

2. Simplify each expression.

3. Remember to box and circle when combining.

4. Use your calculator to help you!

GOOD LUCK! HERE WE GO!

Multiple Choice

1. Use the distributive property to rewrite the following expression.

3(a + h)

• 3a +3h

• 3a - 3h

• 3a + h

• 3ah

3(a + h)

ANSWER

3a + 3h

Multiple Choice

2. Use the distributive property to rewrite the following expression.

-6(r - 8)

• 48r

• -6r - 8

• -6r + 48

• r + 48

-6(r - 8)

ANSWER

-6r + 48

Multiple Choice

3. Write the following expression in simplest form by combining like terms.

21u + 2u - 21

• 19u - 21

• 23u - 21

• 19u + 21

• 2u

21u + 2u - 21

ANSWER

23u - 21

Multiple Choice

4. Evaluate the following expression if f = 9 and h = 6

9f + 3h

• 648

• 504

• 63

• 99

9f + 3h if f = 9 and h = 6

ANSWER

99

Multiple Choice

5. Evaluate the following expression if r = 6

5r² + 5

• 905

• 205

• 175

• 185

5r² + 5 if r = 6

ANSWER

185

Multiple Choice

6.  Find the perimeter of the triangle.

• 3b + 6x

• 3b + 10x

• 13xb

• 3b - 10x

3b + 8x + 2x

ANSWER

3b + 10x

Multiple Choice

7. Write the following expression in simplest form by combining like terms.

9x - 12 - x + 5

• 8x - 7

• 10x - 17

• 10x + 17

• 8x + 7

9x - 12 - x + 5

ANSWER

8x - 7

Multiple Choice

8. Find the perimeter of the rectangle.

• 16ab

• 9a + 25b

• a + b

• 6a + 10b

3a + 3a + 5b + 5b

ANSWER

6a + 10b

Multiple Choice

9. Write the following expression in simplest form by combining like terms.

8x - 4 - 13x - 1

• -5x - 3

• -5x - 5

• 21x + 3

• 21x - 3

8x - 4 - 13x - 1

ANSWER

-5x - 5

Multiple Choice

10. Write the following expression in simplest form by combining like terms.

-2x + 6 - 13x - 16

• 11x - 10

• 11x + 22

• -15x - 10

• -15x + 22

-2x + 6 - 13x - 16

ANSWER

-15x - 10

Great Job Everyone!

Enjoy your weekend!