Vocabulary
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Addition: joining or increasing two or more sets
Addends: the numbers that are being joined in an addition problem
Sum: the answer to an addition problem
Closure Property of Addition: the sum of any two numbers will always be a unique whole number
Addends: the numbers that are being joined in an addition problem
Sum: the answer to an addition problem
Closure Property of Addition: the sum of any two numbers will always be a unique whole number
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Subtraction: taking away something from a set or comparing two sets
Minuend: the whole that something is being taken away from
Subtrahend: the part that is being taken away
Difference: the answer or solution to the problem
Minuend: the whole that something is being taken away from
Subtrahend: the part that is being taken away
Difference: the answer or solution to the problem
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Take-Away Problems: part is taken away from the whole
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Comparison Problems: compare two parts to a whole or compare to wholes
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Identity Property of Addition: adding zero to a number does not change that number
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Commutative Property of Addition: the order of the addends does not matter
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Associative Property of Addition: if more than two numbers are being added the order in which they are added does not matter
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Balance: the process of making both sides of the equation the same
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Variable: a symbol that represents a a number or a set of numbers