1. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Preview 1-1 Evaluating Algebraic ExpressionsEvaluating Algebraic Expressions 1-2 Writing Algebraic ExpressionsWriting Algebraic Expressions 1-3 Integers and Absolute ValueIntegers and Absolute Value 1-4 Adding IntegersAdding Integers 1-5 Subtracting IntegersSubtracting Integers 1-6 Multiplying and Dividing IntegersMultiplying and Dividing Integers 1-7 Solving Equations by Adding or SubtractingSolving Equations by Adding or Subtracting 1-8 Solving Equations by Multiplying or DividingSolving Equations by Multiplying or Dividing 1-9 Solving Two-Step EquationsSolving Two-Step Equations Warm Ups

2. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Simplify. 1. 21 – 2(3) 15 31 21 20.4 15.3 5. 7(2.9) – 5 4. 6(1.4) + 12 3. 2(9) + (3) 2. 4 + 3  9 1-1 Evaluating Algebraic Expressions

3. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Evaluate each expression for the given values of the variables. Which operation symbol goes with each word? 23 18 1 +    4. Sum5. Product 6. Quotient7. Difference 1. 9y – 13 for y = 4 2. 6n + 2p for n = 2 and p = 3 3. 3x – y for x = 1 and y = 2 1-2 Writing Algebraic Expressions

4. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Evaluate each expression for the given values of the variables. 1. 2x – 3y for x = 17 and y = 6 2. 5(x + 3) + 4y for x = 3 and y = 2 3. 6.9(x – 2.7) + 7.1 for x = 5.1 4. 5x – 4y for x = 0.3 and y = 0.2 16 38 23.66 0.7 1-3 Integers and Absolute Value

5. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Graph each number on a number line. 1. –52. 7 3. –44. 0 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 1-4 Adding Integers

6. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Add. 1. –7 + 24. –6 + (–28) 2. –12 + (–9) 5. 104 + (–87) 3. 32 + (–19) 6. –18 + (–24) –5–5–34 17 –42 –21 13 1-5 Subtracting Integers

7. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Multiply or divide. 4072 7 12 4 126 1. 5(8) 2. 6(12) 3. 36 9 4. 49 7 192 16 5. 18(7)6. 1-6 Multiplying and Dividing Integers

8. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Add, subtract, multiply, or divide. 41 4 –42 36 –8 1. 24 + 17 2. 23 – 19 3. 12  3 4. 6(–7) 5. 6. –250 + (–85) –64 8 –335 1-7 Solving Equations by Adding or Subtracting

9. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Write an algebraic expression for each word phrase. 1. a number x decreased by 9 2. 5 times the sum of p and 6 3. 2 plus the product of 8 and n 4. the quotient of 4 and a number c x – 9 5(p + 6) 2 + 8n Holt CA Course 2 4 c __ 1-7 Solving Equations by Multiplying or Dividing

10. Holt CA Course 2 1-1 Evaluating Algebraic Expressions Warm Up Add or subtract. 1. –6 + (–5) 2. 4 – (–3) 3. –2 + 11 Multiply or divide. 4. –5(–4) 5. 6. 7(–8) –11 7 9 20 –6–6 –56 18 –3–3 1-8 Solving Two-Step Equations