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6 Cards in this Set
- Front
- Back
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all
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the whole thing; every one
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none
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not one; not any
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regroup
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to trade or make groups in a new way
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number line
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a line showing a group of numbers in counting order
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fact families
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all the addition and subtraction facts that use the same numbers
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check
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to look at something in order to make sure that it is right or correct
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