Distributive property

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    19-Jun-2015
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  • 1. The Distributive Property of Algebra

2. Review On your notecard, please work these 5 problems individually. For each of these properties, write an equation that gives me an example of that property. I will collect 4 minutes after the bell and we will find my favorite no. 1. Associative Property of Addition 2. Commutative Property of Multiplication 3. Zero Property of Multiplication 4. Identity Property of Addition 5. Inverse Property of Multiplication 3. Todays Target Today, I will be able to use and understand the distributive property of real numbers. SOL 7.16 b 4. Example: 4 x 53 =4(50 + 3) =(4 x 50) + (4 x 3) =200 + 12 =212 Work in groups of 2 to explain what is happening in the example, then use a similar strategy to solve problems 1-3. 1.7 x 67 2.8 x 91 3.5 x 142 Do Now 5. Distributive Property! What does distribute mean? 6. Distributive Property! The Distributive Property (of Algebra) says: + ac= aba(b + c) 7. Distributive Property How does this go along with our warm-up? 4 x 53 =4(50 + 3) =(4 x 50) + (4 x 3) =200 + 12 =212 + ac= aba(b + c) 8. Now with some variables Simplify the following expressions 5 (2x - 3) -7 (x + 2) 10 (2x - 5) -6 ( -2m + 2) = 10x- (5 3) = -7x +(-72) = -7x - 14 = 102x - (510) = (-6-2m) +(-62) = 12x - 12 = 10x - 15 = 20x - 50 9. Khan Academy Example 10. Write five challenging expressions that can be simplified using the distributive property and then solve them! Example (dont use mine!) -7 (x + 2) = (-7x) + (-72) =-7x + (-14) Lastly, write one question you have about the distributive property! Exit Ticket