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.

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:

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

Example 1

2[5 + (-30 ÷ 6)²]

Evaluate 4[12 ÷ (6 – 2)]2.

Example 2

Example 3

Evaluate 48 ÷ 23 ● 3 + 5.

Example 4

Example 5Evaluate 2(x2 – y) + z2

if x = 4, y = 3, and z = 2.

Example 6Evaluate 3a- 23 ÷ b if a = 7, and b = 4.

Example 7Evaluate 4c – 2d ÷ c

if c = 2, and d = 5.

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

Now You Try

Evaluate (8 – 3) ● 3(3 + 2)

1. A2. B3. C4. D

Evaluate 2(4 + 7) ● (9 – 5)

1. A2. B3. C4. D

Evaluate 3[5 – 2 ● 2]2.

1. A2. B3. C4. D

1. A2. B3. C4. D

Evaluate x3 – y2 + z if x = 3, y = 2, and z = 5.

1. A2. B3. C4. D

Evaluate c4 – d · 2 if c = 2, and d = 5.

1. A2. B3. C4. D

Evaluate 5x + 32 ÷ p if x = 2, and p = 3.

1. A2. B3. C4. D

Exit SlipEvaluate each expression. Show Every step. 1) 5 + 2(9 – 1) 2) 3) 2x² + 3y, if x = 3 and y = 54) a² - (b + c) if a= 8, b= 17, and c = 21

2

3210

1. A2. B3. C4. D

BonusComplete 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

902

8,100