1. Lesson 1-6/ 1-7 Writing Algebraic Expressions

2. To evaluate an expression, substitute a number for a variable Example 1: Evaluate 3n + 7 when n = 3

3. Example 2: Evaluate n ÷ 2 + n when n = 4 (use PEMDAS)

4. Example 3: Evaluate 9 + 3p – 5t + 3 when p = 2 and t = 1 (use PEMDAS)

5. Example 4: Evaluate m² + y/5 when m = 2 and y = 35 (use PEMDAS)

6. How would you write this expression out in words? n + 25

7. Operation Key Words + Add More than Sum Increased by - Subtract Minus Difference of Less than Take away Decreased by x Times Multiplied by Product of ÷ Divided by Quotient

9. Sum

10. Less than

11. Product

12. More than

13. Difference

14. Increased by

15. Write each phrase as an algebraic expression Example 5: 4 more than a number Example 6: the product of 20 and t

16. Write each phrase as an algebraic expression Example 7: the sum of 4 times a number and 2

17. Write each phrase as an algebraic expression Example 8: 4 times the sum of a number and 2

18. Write each phrase as an algebraic expression Example 9: m plus the product of 6 and n

19. Write each phrase as an algebraic expression Example 10: 14 less than the quantity k times 6