2.43乘5.6+11.2+5.6乘5.57的巧算怎么做

问题描述:

2.43乘5.6+11.2+5.6乘5.57的巧算怎么做

2.43x5.6+11.2+5.6x5.57=2.43x5.6+2x5.6+5.57x5.6=(2.43+2+5.57)x5.6=10x5.6=56