Correcto: 5 + 5, 4 + 6, 2 + 8, 7 + 3, 1 + 9, 10 + 0, 0 + 10, 9 + 1, 8 + 2, 3 + 7, 6 + 4, Incorrecto: 3 + 9, 7 + 6, 8 + 5, 4 + 2, 1 + 8, 5 + 3, 2 + 2, 3 + 4, 9 + 0, 0 + 7, 6 + 6, 5 + 7, 7 + 2, 9 + 4, 4 + 4, 5 + 6, 6 + 0, 1 + 0, 3 + 8, 8 + 8, 7 + 7, 4 + 5, 3 + 3, 1 + 1, 2 + 9,

CALCULO MENTAL

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