81 ? 9 = 9, plus, minus, divided by, times, 72 ? 8 = 80, plus, minus, divided by, times, 65 ? 20 = 45, plus, minus, divided by, times, 35 ? 4 = 140, plus, minus, divided by, times, 78 ? 16 = 62, plus, minus, divided by, times, 16 ? 2 =32, plus, minus, divided by, times, 64 ? 58 = 122, plus, minus, divided by, times, 23 ? 1 = 23, plus, minus, divided by, times, 76 ? 4 = 19, plus, minus, divided by, times, 23 ? 23 = 1, plus, minus, divided by, times.

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