90 - 50 =, 25, 43, 40, 50, 40 - 30 =, 45, 30, 53, 10, 93 - 12 =, 71, 81, 89, 79, 40 - 20 =, 39, 47, 20, 65, 80 - 12 =, 34, 48, 49, 68, 25 - 13 =, 12, 13, 10, 7, 23 -20 =, 20, 3, 13, 23.

Double Digit Subtraction

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