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# 3rd Cluster 3 Vocabu

### CCS NC 3rd grade cluster 3 vocabulary

TermDefinition
Addition The process of finding the total of two amounts
Associative Property Add or multiply regardless of the numbers grouped in parenthesis
Compatible number Two numbers that are close in value (friendly numbers)
Difference The result of subtracting one number from another
Equation The process of making 2 things equal
Estimation Make a reasonable guess about something
Expanded Form Writing a number in a way that notes its place value
Friendly Number Numbers that can be easily computed
Horizontal A line that runs from left to right across a surface
Model A visual representation of the math problem
Place Value The value of a digit depending on its place within a number
Reasonableness Determination of how sensible something is
Round A determination of which friendly number the actual number is closes to
Subtraction The process of taking a specific number away from a group
Sum The result of adding two or more numbers
Symbol An object or picture that represents something else
Unknown Number A number we do not know, usually represented by a symbol
Vertical A line that runs up and down
Whole Number Numbers that represent whole objects without pieces.
Created by: teach3rd