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Solving equations with multiplication and division web
- 2. Your friend’s mountain bike cost $245 more than his skateboard. His mountain bike cost $290. How much did your friend’s skateboard cost? Write an equation and solve Log into your chrome book Go to: ◦ http://lcmath7.blogspot.com/ Click on your hour and post your thoughts…
- 3. Adding and Subtracting Integers Properties of addition Multiplying and Dividing Integers Solving one-step equations with addition and subtracting
- 4. Discuss… ◦ What is the goal when solving equations? ◦ What are the steps to solve this problem? ◦ What allows me to do those steps? Properties? Concepts?
- 5. Students will learn to… ◦ Solve one-step equations with multiplication and division.
- 6. Integer Operations Assessment ◦ Thursday ◦ Friday
- 7. Inverse operation Isolate the variable Multiplication Property of Equality ◦ If you multiply each side of an equation by the same number, the two sides remain equal. Division Property of Equality ◦ If you divide each side of an equation by the same nonzero number, the two sides remain equal.
- 8. 4x = 32 Goal: Isolate the variable Question: How can I get the variable by itself? Think… What is the inverse operation of multiplication or Think… What is the opposite of multiplying by 4?
- 9. 4x = 32 4 4 x=8 Goal: Isolate the variable Question: How can I get the variable by itself? Think… What is the inverse operation of multiplication or Think… What is the opposite of multiplying by 4?
- 10. 10x = 150 How did you get your answer? Describe what you were thinking... What was difficult about that concept?
- 11. 10x = 150 10 10 x = 15 How did you get your answer? Describe what you were thinking... What was difficult about that concept?
- 12. Goal: Isolate the variable Question: How can get the variable by itself? How did you get your answer? Describe what you were thinking... What was difficult about that concept?
- 13. Goal: Isolate the variable Question: How can get the variable by itself? How did you get your answer? Describe what you were thinking... What was difficult about that concept?
- 14. Goal: Isolate the variable Multiply both sides by 3 How did you get your answer? Describe what you were thinking... What was difficult about that concept?
- 15. Can you solve one-step equations w/ multiplication and division????
- 16. pg. 356 #3-6, 24, 26 Solve one-step equations w/ multiplication and division.
- 18. A number multiplied by three is 27. A number divided by eight is two. A number tripled and increased by ten is 22.
- 19. Adding and subtracting Integers Multiplying and dividing Integers Properties of Addition Properties of Multiplication Solving one-step equations
- 21. Students will learn to… ◦ Solve 2-step equations.
- 22. Discuss… ◦ What operations are involved in this problem? ◦ How many terms? ◦ In order of operations, what do we do first? Solve 2 step equations.
- 23. Without guess and check, what steps are used to solve this equation? Goal: Isolate the variable Question: How can I get the variable by itself? How is this process related to the order of operations? x=4
- 24. Order of Operations – backwards ◦ 1) Combine like terms ◦ 2) Undo addition or subtraction ◦ 3) Undo multiplication or division Like terms: 3x + 5 + 5 = 22
- 25. Simplify by combining like terms ◦ 5x + 12 + (-9) = 8 ◦ 5x + 3 = 8 Undo addition or subtraction ◦ 5x + 3 = 8 ◦ - 3 = -3 ◦ 5x = 5 Undo multiplication or division ◦ 5x = 5 ◦ 5 5 ◦ x=1
- 26. Simplify by combining like terms ◦ 2x + x + 10 = 25 ◦ 3x + 10 = 25 Undo addition or subtraction ◦ 3x + 10 = 25 ◦ - 10 = -10 ◦ 3x = 15 Undo multiplication or division ◦ 3x = 15 ◦ 3 3 ◦ x=5
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