30 - 1 =, 29, 31, 39, 21, 40 - 2 =, 48, 38, 42, 28, 50 - 3 =, 53, 48, 50, 47, 50 - 4 =, 46, 47, 54, 53, 50 - 5 =, 44, 45, 55, 50, 50 - 9 =, 59, 42, 40, 41, 51 - 9 =, 60, 42, 43, 55, 61 - 9 =, 52, 50, 42, 70, 31 - 2 =, 29, 33, 28, 27, 31 - 3 = , 34, 27, 28, 33, 31 - 4 =, 27, 35, 28, 34, 92 - 9 =, 83, 101, 84, 100, 93 - 9 =, 85, 84, 102, 90, 93 - 8 =, 102, 84, 80, 85, 83 - 8 = , 80, 74, 75, 91, 33 - 8 =, 30, 26, 41, 25, 33 - 7 =, 26, 40, 43, 31, 43 - 7 =, 34, 50, 40, 36, 53 - 6 =, 47, 59, 57, 45, 63 - 6 =, 69, 57, 59, 67.

Subtraction Patterns

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