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Name:________________________________________________________________________________Date:_____/_____/__________ BRAIN BLITZ/ Warm-UP
Evaluate using the Order of Operations:
3 (23 x 5 ÷ 4) - 2
1) 2(10 + 2)2
2)2(10 + 22)
3)- 32 ÷ 3 + (-3)2
4) Be careful . This one is tricky . . .
2(8 + 2) ÷ 2(-9 + 22)
Today’s Lesson:
What: “evaluating algebraic
expressions”
Why: To evaluate algebraic expressions using the Order of Operations.
What’s the difference??
math sentence that uses BOTH numbersand variables.
Terms– parts of a math sentence separated only by an ______________________________ or subtraction sign.Numeric Expression— math sentence that uses ___________________ only!Algebraic Expression— math sentence that uses BOTH numbers AND ____________________________ .
numbers
variables
addition
Algebraic Expression Coefficient(s) Variable(s) Constant(s)1) 3xy2) 2x - y + 43) -2 + 5x + yz4) 5x + 2y + 3
Fill-in chart:
3 x and y2 and -1 x and y 4
-2x, y, and z5 and 15 and 2 x and y 3
Evaluate the following when x = -2 and y = 41) ( x) + 8²
2) 3) y + 20 ÷ (x)2
Guided Examples . . .
12 -7 9
4) 4 + 2x + xy5) 3 – x + (-6 – y)²
6) + 4x ²
-8
Evaluate the following when x = -2 and y = 4CONTINUED . . .
105 18
END OF LESSON
The next slides are student copies of the notes for this lesson. These notes were handed out in class
and filled-in as the lesson progressed.
NOTE: The last slide(s) in any lesson slideshow represent the homework assigned
for that day.
Term– part of a math sentence separated only by an ______________________________ or subtraction sign.Numeric Expression— math sentence that uses _________________________ only!Algebraic Expression— math sentence that uses BOTH numbers AND ___________________________.
3x + 8__________
__________
__________
Math-7 NOTES DATE: ______/_______/_______What: “evaluating algebraic expressions”
Why: To evaluate algebraic expressions using the Order of Operations.NAME:
What’s the difference??
Essential vocabulary . . .
Algebraic Expression Coefficient(s) Variable(s) Constant(s)1) 3xy2) 2x - y + 43) -2 + 5x + yz4) 5x + 2y + 3
Fill-in chart:
Evaluate the following when x = -2 and y = 41) ( x) + 8² 2) 3) y + 20 ÷ (x)2
4) 4 + 2x + xy 5) 3 – x + (-6 – y)² 6) + 4x ²
Guided Examples . . .
Math-7 classwork NAME:______________________________________________________________________________ DATE: _____/_____/__________
“Evaluating Algebraic Expressions”
1) 2) 3)
4) 5) 6)
7) 8) 9)