简便计算39+61-39+61

分类: 作业答案 • 2021-12-31 11:36:27

问题描述：

简便计算39+61-39+61
39+61-39+61

答

39-39+（61+61）=122简便计算128*64-128*48+128*50-16*128ԭʽ=128*��64-48+50-16�� =128*��64-16+2�� =128*��64-14�� =128*50 =130*50-2*50 =6400