AGENDA• WARM-UP• REVIEW PACKET

QUESTIONS??• LESSON 21• EXIT CARD

WARM-UP

Plot the ordered pairs on the coordinate plane.

1. (3, -4)

2. (-5, -2)

3. (0, -1)

4. (4, 0)

LESSON 21: DISTRIBUTIVE PROPERTY AND ORDER OF OPERATIONS

Recall: What is the rectangle perimeter formula?

DISTRIBUTIVE PROPERTY

a(b + c) = a·b + a·c

a(b – c) = a·b - a·c

“swoop, swoop”

**Here, we are expanding**

EXPAND.

Ex: 5(x + 4) Ex: 7(w – z)

THE OPPOSITE OF EXPANDING IS FACTORING-The opposite of multiplying is____________

Ex: Factor: 6x + 15 Steps:

FACTOR:

Ex: dr + dp Ex: 8 + 24y

ORDER OF OPERATIONS

Please -

Excuse -

My -

Dear -

Aunt -

Sally -

SIMPLIFY:

Ex: 40 - + 2(8 – 3) Ex: 9 – {4 + [8 – 2(3)]}

SIMPLIFY:

Ex:

Ex: |5 – 18|

Ex:

The expression 4 + - 4 ÷ 4 equals 19. Copy the expression and insert one pair of parentheses to make the expression equal 7.

• Lesson 21

• Pp. 143-145: A – M All, #1 – 3 All

• CP: #22

• Due Tuesday