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| The process of making groups of tens when adding or subtracting two digit numbers (or more). Also known as 'Borrowing' or 'Carrying' |
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| A close guess of the actual value, usually with some thought or calculation involved. |
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| The numbers being added together in an addition problem. |
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| The numerical value that a digit has by virtue of its position in a number. |
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| The result of joining two or more numerical values. |
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| A Process or set of rules followed in calculations or other problem solving operations. |
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•The associative property states that you can add or multiply regardless of how the numbers are grouped. |
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•The word "commutative" comes from "commute" or "move around", so the Commutative Property is the one that refers to moving stuff around. |
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•The result of subtracting one number from another |
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•Accuracy is how close a measured value is to the actual (true) value. |
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