2 + 45 =, 54 - 2 =, 30 x 10, 60 + 100 =, 20 - 10 =, 11 x 9 =, 6 + 11 =, 65 - 11 =, 8 x 12 =, 10 + 25 =, 100 - 10 =, 12 x 100 =

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