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Subtraction - Basic Facts
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6-4
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12-5
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11-7
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Okay!
15-9
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14-6
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Okay!
13-7
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Okay!
19-10
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15-7
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Okay!
10-4
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Okay!
8-4
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Okay!
12-7
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Okay!
10-8
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Okay!
7-2
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Okay!
13-5
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Okay!
7-5
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Okay!
6-5
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Okay!
12-9
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Okay!
12-8
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Okay!
18-8
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Okay!
6-3
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Okay!
9-6
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Okay!
11-5
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Okay!
8-3
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Okay!
12-3
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Okay!
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