Question

196×0.56-5.6×9.6怎么简便计算？

Answer 1

简便计算如下
196×0.56-5.6×9.6
＝5.6×（19.6-9.6）
＝5.6×10
＝56

Answer 2

原式=19.6*10*5.6/10-5.6*9.6=19.6*5.6-5.6*9.6=(19.6-9.6)*5.6=10*5.6=56