Do Now 9/10/09Do Now 9/10/09

Take out HW from last night.Take out HW from last night. Text p. 12-13, #14-32 evens & 36Text p. 12-13, #14-32 evens & 36

Copy HW in your planner.Copy HW in your planner. Text p. 19, #10-36 evensText p. 19, #10-36 evens Quiz sections 1.1-1.4 TuesdayQuiz sections 1.1-1.4 Tuesday

In your journal answer the following question. In your journal answer the following question. Suppose “#” is a special operation that “a # b” means Suppose “#” is a special operation that “a # b” means 4a – 2b. What is 3 # 2? What is 2 # 3? Is # a 4a – 2b. What is 3 # 2? What is 2 # 3? Is # a commutative operation? commutative operation?

Homework Text p.12-13, #14-32 evens & 36

14).

16).

18).

20).

22). 2 to the 5th power;

24). 12 cubed; 26). 4 to the 4th power;

28). 0.6 to the 4th power;

30). 49; 0.16

32). 2401; 0.0256

36). a. 3375 in³; b. 121.5 lb

4n3222222

311

2)7.1(

42

1728121212 2564444

1296.0)6.0)(6.0)(6.0)(6.0(

Evaluate the Expression

3 + 7 x 3

3 + 7 = 10

10 x 3 = 30307 x 3 = 21

3 +21 = 2424

Objective

SWBAT use the order of operations to evaluate expressions.

Section 1.3, Order of Operations

Order of OperationsOrder of Operations – the rules established to evaluate an expression involving more than one operation

4(y² – 8) 13 * 2

2 - 14 5 ÷ x · 6

Evaluate expressions within grouping signs. Evaluate expressions within grouping signs. ( ) parentheses, [ ] brackets, fraction bars( ) parentheses, [ ] brackets, fraction bars

Evaluate powers.Evaluate powers.

Multiply and divide from left to right.Multiply and divide from left to right.

Add and subtract from left to right.Add and subtract from left to right.

11

33

44

PPEEMDMDASAS

22

Order of Operations

Evaluate the ExpressionPPEEMDMDASAS

4 + 7 x4 + 7 x 334 + 4 + 2121

2525

²²2 + 7 x2 + 7 x 33

Evaluate the Expression

[2 x (4 + 4)] +[2 x (4 + 4)] + 33

PPEEMDMDASAS

[2 x 8] + 3

16 + 3

43

³³

³³

³³16 + 27

Evaluate the expressions when m = 3.Evaluate the expressions when m = 3.

a. (1 + m²) Substitute.Substitute.

Evaluate power.Evaluate power.

b. m³ – 6 ÷ 6 Substitute.Substitute.

Evaluate power.Evaluate power.

Divide.Divide.

(1 + 3²)

3³ – 6 ÷ 6

(1 + 9)10 Add within parentheses.Add within parentheses.

27 – 6 ÷ 6

Subtract.Subtract.

27 – 126

Divide.

Evaluate power.27 32 2 – 3 = 27 9 2 – 3

27 9 2 – 3 = 3 2 – 3

3 2 – 3 = 6 – 3 Multiply.

Multiply and divide from left to right.

STEP 3

Evaluate the expression 27 32 2 3.–

There are no grouping symbols, so go to Step 2.

STEP 1

Evaluate powers.

STEP 2

STEP 4

Add and subtract from left to right.

6 – 3 = 3 Subtract.

ANSWER

The value of the expression 27 32 2 – 3 is 3.

= 2[9]

Evaluate the expression.

a. 7(13 – 8) == 35

Subtract within parentheses.

Multiply.

b. Rewrite fraction as division.

Evaluate within parentheses.

Divide.

c. 2[30 – (8 + 13)] = Add within parentheses.

Subtract within brackets.

=18 Multiply.

7(5)

2[30 – 21]

712

614

4

520

)712()614(

Evaluate the expression when x = 4.

9x3(x + 2)

Substitute 4 for x.

Add within parentheses.

1836= Multiply.

= 2 Divide.

= 9 4

3(4 + 2)

3 6 9 4

=

2424

Text p. 19, #10-36 even

HomeworkHomework

NJASK7 PrepNJASK7 Prep