70 + 6 = - 76, 30 + 8 = - 38, 60 + 4 = - 64, 20 + 5 = - 25, 90 + 3 = - 93, 50 + 7 = - 57, 80 + 2 = - 82, 40 + 9 = - 49,

19-Addition Within 100-Without regrouping

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