| Subtracting by One | 
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| Subtract Consecutively by One (2 rows) |
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| Subtract Consecutively by One (5 rows) |
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| Subtracting by Two |
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| Subtracting Half of a Double |
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| Subtracting with Zeros |
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| Subtracting with Twos |
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| Subtracting Doubles Plus One |
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| Subtracting from Ten |
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| Subtracting by Nine |
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| Subtraction Odd Balls |
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| Mixed #1 (0-10) |
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| Mixed #2 (0-10) |
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| Mixed #3 (0-10) |
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| Mixed #1 (0-9), 100 facts |
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| Mixed #2 (0-9), 100 facts |
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