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10 Terms

1
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Commutative property of addition

For any numbers a and b, a + b = b + a

2
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Putting together model for addition

Suppose a count X is put together with a count y with the same units. If there is no overlap, then the result has count X plus Y.

3
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Absolute Value

Represents the distance a number is from the value zero on a number line

4
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Associative property of addition

For any numbers a, b, c, (a+b) + c = a + (b+c)

5
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Slide model for subtraction

If a quantity X is decreased by an amount, Y with the resulting quantity is X - Y

6
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Comparison model for subtraction

X-y is how much more X than y

7
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8
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9
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10
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