OA.1 Lesson

OA.1 Lesson

I can use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.

PEMDAS

Please Excuse My Dear Aunt Sally

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

P

-parentheses, brackets and braces

-these are always solved first

Multiple Select

Solve.

4 + (5 x 2)

• 18

• 14

• 16

• 20

Multiple Select

Solve.

(3 x 2) + (6 - 2)

• 9

• 12

• 10

• 11

Multiple Select

Solve.

[(4 -2) + 7] x 6

• 42

• 48

• 56

• 54

Multiple Select

Solve.

{18 - [(3 x 2) -5] x 1} + 7

• 24

• 21

• 32

• 18

E

-exponents

-we won't see these in 5th grade : )

MD

-multiplication and division

-They are married!

-solve them from left to right

Multiple Select

Solve.

$$24\ \div\ 6\ \times\ 2$$  

• 8

• 2

• 12

• 16

Multiple Select

$$\left[\left(2\ +\ 7\right)\ \div\ 3\ \times\ 4\right]\ -\ 5$$

• 13

• 8

• 7

• 12

AS

-addition and subtraction

-They are married too!

-solve them from left to right

Multiple Choice

Solve.  $$14\ -\ 9\ +\ 3$$  

• 2

• 9

• 11

• 8

Multiple Select

Solve. $$\left[15\ -\ 3\ +\ 4\right]\ \div\ 4$$  

• 12

• 9

• 4

• 18

Multiple Select

Solve.

[(8 x 7) - 4] + 9

• 61

• 59

• 60

• 43

Multiple Select

$$\left(100\ +\ 50\right)\ +\ 4\ \div\ 2$$  

• 77

• 158

• 154

• 152

Multiple Select

$$\left[\left(20-8\right)\ \div\ 2\ \times\ 3\right]\ +\ 4$$  

• 6

• 22

• 14

• 9

Multiple Select

$$\left(16\ +\ 4\ \div\ 2\right)\ -\ 7\ +\ 5$$  

Which part of the equation would you solve first?

• 16 + 4

• $$4\ \div\ 2$$  

• 7 + 5

• 2 - 7

Open Ended

THINK IT THROUGH:

When does Christmas come before Thanksgiving?

Open Ended

JOKE:

What do you call a sad cranberry?