agenda warm-up review packet questions?? lesson 21 exit card
Post on 19-Jan-2016
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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
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