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The parentheses pair: ( ) is the most common grouping symbol you will see and use in math. Grouping symbols are used to show which part of the math problem should be done first. 
Which part of the problem is found inside the parentheses?
1. (12 + 4) + 5 12 + 4
2. 7 + (3 + 20) 3 + 20
3. 6  (4 + 11) 4 + 11
4. 9  (4 + 1) + 3 4 + 1

Add parentheses as noted.
5. Add parentheses around 9 + 2: 33  ( 9 + 2 )
6. Add parentheses around 11  5: (11  5 ) + 40
7. Add parentheses around 6 + 23: (6 + 23) + 17
8. Add parentheses around 5 + 2: 47 + ( 5 + 2 )


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The various resources listed below are aligned to the same standard, (5OA01) taken from the CCSM (Common Core Standards For Mathematics) as the Expressions and equations Worksheet shown above.
Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:
Write and interpret numerical expressions