7A数学计算题
问题描述：
7A数学计算题
就是那些正负数计算的,不要乘除的.
答
1,26 - 9 =2,35 - 85 =3,24 - 92 =4,70 - 67 =5,56 - 50 =6,81 - 59 =7,33 - 91 =8,40 - 31 =9,92 - 92 =10,57 - 9 =11,21 - 12 =12,10 - 2 =13,99 - 49 =14,28 - 24 =15,88 - 96 =16,31 - 24 =17,40 - 50 =18,65 - ...