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Subtraction

0. Subtraction introduction.wmv

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1. Removing items from a set.wmv

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2. Counting backwards.wmv

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3. Counting on.wmv

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4. Subtraction without regrouping with manipulatives.wmv

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5. Compact column without regrouping.wmv

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6. Subtraction with regrouping with manipulatives.wmv

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7. Compact column with regrouping with large numbers.wmv

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