'Distributive property states' diaporamas de présentation

2-5

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Lesson by Vi Thai

Properties of Addition. Lesson by Vi Thai. Properties Unit. Middle School This lesson on the properties of addition should come after students have done a quick review of addition. This power point presentation is to accompany the introductory lesson. Commutative Property of Addition.

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BELL-WORK

BELL-WORK. 1. Evaluate 3 x + 5 y 2 for x = 0, y = -3 3(0) + 5(-3) 2 0 + 5(9) 45. BELL-WORK. Solve: 2. x + 7 = 41 2 x = 34 2 x = 68. BELL-WORK. Solve: 3. - x = 45 5 - x = 225 x = -224 -2 x + 9 = -11 -2 x = -20 x = 10.

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Learn to combine like terms in an expression .

Learn to combine like terms in an expression. Vocabulary. terms like terms equivalent expressions simplify. Helpful Hint. Constants such as 4, 0.75, and 11 are like terms because none of them have a variable. Terms in an expression are separated by plus or minus signs.

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2.5 Algebraic Proofs

2.5 Algebraic Proofs. Our goal for today is to answer the following guiding question: Why is it important to justify the steps in a proof with reasons?. Proof. Proof argument that uses logic, definitions, properties, and previously proven statements to show that a conclusion is true.

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9. Deductive 23. D 10. Inductive 24. H 11. Invalid 25. 196

9. Deductive 23. D 10. Inductive 24. H 11. Invalid 25. 196 12. Valid 32. (2.5, 3.5) 13. Better grades in SS 34. (0, 3) 14. 0.24 min or 14.4 sec 15. valid 16. invalid 17. valid 18. invalid 19. yes; no; first conditional was false

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