1. Operations and Algebraic Thinking
Fifth-Grade
Common Core
Math
Operations and Algebraic Thinking
5.OA.1. Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
( { [ ] } )
By: Jessica Dykes

2. Today we will use these mathematical practices:
5.MP.1. Make sense of problems and persevere in solving them. (Never give up!)
5.MP.5, Use appropriate tools strategically.
5.MP.8. Look for and express regularity in repeated reasoning.

3. Key Vocabulary
Expression- a combination of numbers, variables, and/or operations
Ex. 2+3
2+9x3
B+5
Order of Operations- a set of rules for evaluating an expression with more than one operation

4. First let’s review: Order of Operations
P-Parentheses- This also includes braces
and brackets.
E-Exponents
M/D-Multiply or divide depending on what
comes first from left to right.
A/S-Add or subtract depending on what
comes first from left to right.
PEMDAS or Please Excuse My Dear Aunt Sally StudyJams

5. Take out your white board.
Let’s practice:
Take out your white board.
– 9 ÷ 3 -1 =
( 3 X 6 ) +10=
÷ 3 + (63 ÷ 3) – 6 =

6. . Examples: (26 + 18) ÷ 4 { [2 X (3+5)] - 9} + [5 x (23-18)]
Answers: 11 32
11.2
Circle the operation you would do first in red.
x ( 3 + 6) -16
2. [ 36 + (2 x 5)] ÷ 2
÷ 2 x 4

7. Word problems
A teacher has to buy supplies for her class. She buys each of her 24 students a box of crayons for $0.50 each, a pair of scissors for $1.50, and a spiral notebook for $0.25. How much does it cost for her to buy all of these items? Use one expression to solve.
Answers
24 x [ ( )]
24 x [ ]
24 x 2.25 =
$54.00

8. Notes on Order of Operations
Parentheses:__________________________________
Exponents ____________________________________
Multiply/Divide _________________________________
Add/Subtract __________________________________

9. Notes on Order of Operations
Parentheses:__________________________________
Exponents ____________________________________
Multiply/Divide _________________________________
Add/Subtract __________________________________

10. Activities for practice:
Hello Architect font by Jen Jones
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Copyright © Jessica Dykes April, 2013