What is the relationship between addition and subtraction? How do you know whether an algorithm will always work? Can you explain why order matters in subraction but not in addition, or why it is false to assert that the sum of any two whole numbers is greater than either number? It is organized around two big ideas and supported by smaller, more specific, interconnected ideas (essential understandings). Gaining an understanding about addition and subtraction is essential as they are the foundation for students’ later learning of multiplication and division.
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Seller: BooksRun, Philadelphia, PA, U.S.A.
Paperback. Condition: Good. It's a preowned item in good condition and includes all the pages. It may have some general signs of wear and tear, such as markings, highlighting, slight damage to the cover, minimal wear to the binding, etc., but they will not affect the overall reading experience. Seller Inventory # 0873536649-11-1
Seller: Better World Books, Mishawaka, IN, U.S.A.
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Seller: HPB-Ruby, Dallas, TX, U.S.A.
Paperback. Condition: Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! Seller Inventory # S_413623623
Seller: HPB-Red, Dallas, TX, U.S.A.
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Seller: ThriftBooks-Atlanta, AUSTELL, GA, U.S.A.
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Paperback. Condition: Very Good. No Jacket. May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less. Seller Inventory # G0873536649I4N00
Seller: Revaluation Books, Exeter, United Kingdom
Paperback. Condition: Brand New. 96 pages. 9.90x6.90x0.30 inches. In Stock. Seller Inventory # 0873536649
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