9/10/14 – Order of Operations

DO NOW

1). -4 x 6 = 2). 2 x 10 =

3). -3 x -5 = 4). 18 ÷ - 6 =

5). Write down: what is the rule for determing signs in multiplication and division?

What are we doing Today

OBJECTIVE: WE WILL be able to solve equations using the order of operations

ESSENTIAL UNDERSTANDING: Please Excuse My Dear Aunt Sally – remember PEMDAS!

AP

Who can tell me who this is?

AP

Here is PEMDAS

AP

Important Points: Go in this order

M &D and then A & S are coequal! Go left to right!

Tips for Solving Correctly

1). Start of by numbering the operations

2). Rewrite the equation after each operation

I want to see this on EVERY PROBLEM or there will be no credit!

Example: 7 – 2 x 4 + (3 x 2)

AP

Let’s Do These Together

1). 26 – 4 ÷ 2 =

2). 4 x 4 – (6 -2) =

3). 8 ÷ 2 x 4 =

4). -15 ÷ -3 + (4 x 2) =AP

Try These Independently

5). 8 – 2 x 6 + (9 -1) =

6). (10 – 2) x 2 x 4 =

7). 2 + 4 ÷ 2 x 4 =

Numbered Heads

1). Split into groups of 3. Choose team name.

2). A problem will come up on the screen. Everyone will work independently for one minute on this problem.

3). Then the team has 30 seconds to choose a group answer.

4). Correct teams win points& prizes from Mr. Nauen

Problem #1 – 5 Points

7). 2 + 4 ÷ 2 x -4 =

Problem #2 – 10 Points

8). (-4 + 14 ) – (2 x 6) x 2 =

Problem #3 – 10 Points

9). 9 ÷ 3 x 2 – 4 + 5 =

Problem #4 – 15 Points

10). 9 ÷ 3 x 2 – - 4 + 5 =