23 + 5 = ..........., 6 + 8 = ............, 5 + 8 =............., 10 + 6 =................., 18 - 9 = ..........., 10 + 10 + 20 = ......., 40 + 40 = ............, 23 + 5 + 1 =............, 34 + 6 =......., 17 + 2 = .........., 66 - 6 = .........., 26 - 5 = ........., 9 + 9 =.........., 3 + 4 + 6 = .........., 50 - 20 = ........., 14 - 4 =............., 30 + 10 = .........., 20 + 6 = .......

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