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Borrowing/Regrouping

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Visit this site: http://mathforum.org/library/drmath/sets/select/dm_borrow.html
Author:Math Forum, Ask Dr. Math Common Question
Description: A selection of answers to questions about borrowing, regrouping, and carrying, such as "When doing subtraction problems like 100-99, why do the zeros become nines?" and "When you are subtracting a fraction, do you always take one away from the whole number?"
Levels: Late Elem. (3-5)
Languages: English
Resource Types: Frequently Asked Questions (FAQs)
Math Topics: Subtraction, Number Sense/About Numbers, Problem-Solving

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