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4 + _____ = 9
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6 + _____ = 10
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2 + _____ = 7
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3 + _____ = 9
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4 + _____ = 8
Check
9 + _____ = 10
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5 + _____ = 9
Check
3 + _____ = 10
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6 + _____ = 7
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_____ + 7 = 9
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_____ + 5 = 8
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_____ + 2 = 8
Check
_____ + 4 = 7
Check
_____ + 2 = 10
Check
_____ + 4 = 10
Check
OK