用加减法1-9个数字算成得数是10
问题描述：
用加减法1-9个数字算成得数是10
算成得数为10
答
1 :1 + 2 + 34 - 5 + 67 - 89 = 10 2 :1 - 2 + 34 - 5 + 6 - 7 - 8 - 9 = 10 3 :1 - 2 - 34 - 5 + 67 - 8 - 9 = 10 4 :12 + 3 + 4 + 5 - 6 - 7 + 8 - 9 = 10 5 :12 + 3 + 4 - 5 + 6 + 7 - 8 - 9 = 10 6 :12 + 3 + 45 - 67 + 8 + 9 = 10 7 :12 + 3 - 4 - 5 - 6 - 7 + 8 + 9 = 10 8 :12 - 3 + 4 - 5 - 6 + 7 - 8 + 9 = 10 9 :12 - 3 - 4 + 5 + 6 - 7 - 8 + 9 = 10 10 :12 - 3 - 4 + 5 - 6 + 7 + 8 - 9 = 10 11 :12 - 34 + 56 - 7 - 8 - 9 = 10 12 :123 - 45 - 67 + 8 - 9 = 10