Algebraic Expressions
Friday
Objectives
•I will model algebraic expressions.
•I will replace a variable with a given value and then evaluate the answer. •I will use the distributive property to rewrite an expression and simplify.
Write a variable expression for each model. Squares represent ones(1). Rectangles represent a variable (x).
1. 2.
3.
SPI 0606.1.5 Model algebraic expressions using algebra tiles.
SPI 0606.1.5 Model algebraic expressions using algebra tiles.
Write an algebraic expression to represent this model.
Answer: -3x +5
Evaluate each algebraic expression
1. 3m; where m = 9
2. 4y + 6; where y = 6
3. 2 (4e); where e = 5
4. 3pq; where p=3 and q = 5
5. 7n – (m + 18); where n = 4 and m = 10
Simplify each expression by combining like terms and complete all operations.
1. 2m + 8 + 12 +5m
2. 5(2m • 2) + 8m
SPI 0606.3.4 Rewrite expressions to represent quantities in different ways.
Simplify this expression and write the operations that were performed in each step.
4 (m + 8) + 5m
Simplify this expression and write the operations that were performed in each step.
4² (6n – 3n) + 85
Create your own expression for your partner to model/evaluate. The partners will have to model it correctly and write the operation that was performed.
Today
• You have learned how to evaluate and model algebraic expressions .
• You have reviewed, modeled, evaluated, and simplified expressions using the distributive model.
• You have used algebra tiles to model algebraic expressions.
• Give yourself a pat on the back!
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