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The document discusses the order of operations and its importance in evaluating numerical expressions. It defines key terms like numerical expression, grouping symbols, evaluate, and order of operations. Examples are provided to demonstrate how to use the proper order of operations to solve expressions involving multiple operations like addition, subtraction, multiplication, division, and exponents. One example calculates the total cost for a class trip to the zoo based on admission prices for adults and students.
![Chapter 1.4 McDougal Littell Middle School Math Course 1 Joseph Williams Melvin E. Sine Elementary [email_address] Objective : Use the order of operations.](https://image.slidesharecdn.com/14-9704/85/1-4-1-320.jpg)
![Order of Operations Evaluate expressions inside grouping symbols ( ) [ ] Evaluate Powers 2 4 Multiply and Divide from left to right x and ÷ Add or Subtract from left to right + and -](https://image.slidesharecdn.com/14-9704/85/1-4-4-320.jpg)
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- 1. Chapter 1.4 McDougal Littell Middle School Math Course 1 Joseph Williams Melvin E. Sine Elementary [email_address] Objective : Use the order of operations.
- 2. Vocabulary Numerical Expression – pg. 21 - an expression, consisting of numbers and operations to be performed, that represents a particular value (a math problem with out an equal sign (=) Grouping Symbols – pg. 21 - symbols such as parentheses, brackets, or fraction bars that group parts of an expression.
- 3. Vocabulary Evaluate – pg. 21 - to find the value of an expression (find the answer of the problem). Order of Operations – pg. 21 - the order in which to perform operations when evaluating expressions with more than one operation.
- 4. Order of Operations Evaluate expressions inside grouping symbols ( ) [ ] Evaluate Powers 2 4 Multiply and Divide from left to right x and ÷ Add or Subtract from left to right + and -
- 5. Using the Order of Operations = 14 – 10 14 – 2 x 5 14 – 2 x 5 16 + 4 ÷ 2 - 6 16 + 4 ÷ 2 - 6 16 + 2 - 6 = 18 - 6
- 6. Powers and Grouping Symbols 4 + 2 3 = 4 + 8 (3 +1) x 5 = 4 x 5
- 7. Multi Step Problems Your class is going to the zoo. It costs $16 for each adult and $9 for each student. There are 3 adults and 22 students. What is the total cost of admission? (3 x 16) + (22 x 9) Cost for adults Cost for students 48 + 198 = $246 It would cost $246 for your class to go to the zoo .