1. Do Now Directions Working alone fit the triangle tiles together so that the numbers on the faces that are touching add up to the same total. Ex: 8 + 1 and 7 + 2 both add up to 9 & 4 + 1 and 3 + 2 both add up to 5. You must use all the tiles. Your completed triangle will resemble the picture below.

2. Students will be able to: 1) use the order of operations to solve problems with a 90% accuracy and 2) use order of operations to evaluate algebraic expressions. Objective:

3. Reinforcement of Standard 7AF1.2 Use the correct order of operations to evaluate algebraic expressions such as 3(2x + 5) 2. (CAHSEE)

5. Example 1 2[5 + (-30 ÷ 6)²]

6. Evaluate 4[12 ÷ (6 – 2)] 2. Example 2

7. Example 3

8. Evaluate 48 ÷ 2 3 ● 3 + 5. Example 4

9. Example 5 Evaluate 2(x 2 – y) + z 2 if x = 4, y = 3, and z = 2.

10. Example 6 Evaluate 3a- 2 3 ÷ b if a = 7, and b = 4.

11. Example 7 Evaluate 4c – 2d ÷ c if c = 2, and d = 5.

12. Example 8 Evaluate d + 6c ÷ 4 if c = 2, and d = 5.

13. Now You Try

14. Evaluate (8 – 3) ● 3(3 + 2)

15. 1.A 2.B 3.C 4.D Evaluate 2(4 + 7) ● (9 – 5)

16. 1.A 2.B 3.C 4.D Evaluate 3[5 – 2 ● 2] 2.

17. 1.A 2.B 3.C 4.D

18. 1.A 2.B 3.C 4.D Evaluate x 3 – y 2 + z if x = 3, y = 2, and z = 5.

19. 1.A 2.B 3.C 4.D Evaluate c 4 – d · 2 if c = 2, and d = 5.

20. 1.A 2.B 3.C 4.D Evaluate 5x + 3 2 ÷ p if x = 2, and p = 3.

21. 1.A 2.B 3.C 4.D Exit Slip Evaluate each expression. Show Every step. 1) 5 + 2(9 – 1) 2) 3) 2x² + 3y, if x = 3 and y = 5 4) a² - (b + c) if a= 8, b= 17, and c = 21

22. 1.A 2.B 3.C 4.D Bonus Complete on the back of your paper. 5) Eric Cartman simplified the expression below. Did he simplify it correctly? Explain. 10(3 + 6) 2 10(9) 2 90 2 8,100