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1、 20以内混合进阶题 100道 用时: 错误: 8 1 0 = 3 5 4 = 8 5 2 = 4 1 4 = 2 1 5 = 6 6 4 = 1 5 1 = 6 1 0 = 2 5 2 = 5 8 4 = 0 6 0 = 5 0 0 = 2 9 5 = 6 2 1 = 0 0 2 = 6 4 3 = 2 3 2 = 7 7 2 = 7 2 3 = 2 6 1 = 4 0 3 = 3 5 0 = 1 3 0 = 7 1 4 = 1 6 1 = 7 9 2 = 9 7 5 = 7 1 3 = 1 0 4 = 7 3 4 = 9 1 2 = 7 5 0 = 2 3 1 = 7 7 1 = 0 4
2、4 = 8 2 4 = 4 2 2 = 5 2 0 = 9 2 2 = 4 8 3 = 4 3 3 = 4 3 3 = 4 7 1 = 7 4 5 = 2 2 5 = 3 9 1 = 9 0 1 = 2 6 3 = 0 8 1 = 2 7 2 = 6 8 3 = 9 9 0 = 0 1 1 = 8 9 4 = 2 5 3 = 9 3 3 = 0 9 5 = 3 7 0 = 4 1 1 = 2 7 5 = 8 1 2 = 9 1 1 = 1 9 3 = 2 7 4 = 6 0 1 = 1 8 2 = 6 2 2 = 3 1 1 = 0 7 4 = 2 8 4 = 3 2 4 = 2 9 0 = 4 9 0 = 6 8 0 = 1 9 5 = 0 2 3 = 4 7 4 = 0 0 5 = 0 3 2 = 1 0 0 = 5 1 1 = 5 1 0 = 1 7 3 = 5 1 0 = 9 2 1 = 0 9 0 = 1 9 4 = 9 5 3 = 2 1 4 = 2 1 3 = 6 0 5 = 3 1 3 = 0 3 3 = 5 6 3 = 8 5 5 = 3 5 5 = 8 7 3 = 4 4 0 = 4 1 1 = 1 4 0 =