Add: to join two or more quantities to get one sum
Addend: any number used to get a sum
Data: collection of information
Difference: difference between two numbers (subtraction)
Equal: having the same amount or value
Equality: state of being equal
Equation: mathematical statement containing an equals sign to show that two expressions are equal
Fluent: solving facts quickly and accurately without halting, stumbling or reversing oneself
Fewer: less than
Graph drawing or diagram used to record information
Inverse Operation: opposite or reverse operations (e.g. addition and subtraction)

Minuend: the quantity that you are subtracting from in a subtraction equation
Minus: to subtract
More: greater than
Number Line: line marked with numbers used to show operations
Number Sentence: mathematical sentence written in numerals and mathematical symbols
Plus: to add
Related Fact: addition and/or subtraction sentences that are alike
Scale: the increment used on a graph
Strategy: a plan, a method or a way to solve a problem
Subtract: to take one quantity away from another
Subtrahend: the quantity subtracted from the minuend in a subtraction equation
Sum: the total or whole amount; the result of adding
