Warm-Up Find the error: 2) Evaluate:.

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Warm-Up Find the error: 2) Evaluate:

Order, Order, Order What do the words ace, lost, bent, and below all have in common? (hint look at the letters) * All the letters are in alphabetical order.

In 5 steps or more explain how you would make a peanut butter and jelly sandwich? (Don’t leave out any details)

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Lesson 1-1 Expressions and Formulas Lesson 1-2 Properties of Real Numbers Lesson 1-3 Solving Equations Lesson 1-4 Solving Absolute Value Equations Lesson 1-5 Solving Inequalities Lesson 1-6 Solving Compound and Absolute Value Inequalities Contents

Example 1 Simplify an Expression Example 2 Evaluate an Expression Example 3 Expression Containing a Fraction Bar Example 4 Use a Formula Lesson 1 Contents

PEMDAS Parentheses Exponents Multiplication/Division (left to right) Addition/Subtraction (left to right) Using the Order of Operation try to evaluate this expression:

Find the value of First, subtract 2 from 7. Then cube 5. Multiply 125 by 3. Subtract 375 from 384. Finally, divide 9 by 3. Answer: The value is 3. Example 1-1a

Find the value of Answer: 9 Example 1-1b

Replace s with 2 and t with 3.4. Evaluate if and Replace s with 2 and t with 3.4. Find 22. Subtract 3.4 from 4. Multiply 3.4 and 0.6. Subtract 2.04 from 2. Answer: The value is –0.04. Example 1-2a

Evaluate if and Answer: –110 Example 1-2b

Evaluate the numerator and the denominator separately. Evaluate if , , and Evaluate the numerator and the denominator separately. Multiply 40 by –2. Example 1-3a

Simplify the numerator and the denominator. Then divide. Answer: The value is –9. Example 1-3b

Evaluate if and Answer: –23 Example 1-3c

Replace h with 8, b1 with 13, and b2 with 25. Find the area of a trapezoid with base lengths of 13 meters and 25 meters and a height of 8 meters. Area of a trapezoid Replace h with 8, b1 with 13, and b2 with 25. Add 13 and 25. Multiply 8 by . Multiply 4 and 38. Answer: The area of the trapezoid is 152 square meters. Example 1-4a

The formula for the volume V of a pyramid is , where B represents the area of the base and h is the height of the pyramid. Find the volume of the pyramid shown below. Answer: 50 cm3 Example 1-4b