5.28+12.5*4.12*0.8+4.72简便运算
问题描述:
5.28+12.5*4.12*0.8+4.72简便运算
答
5.28+12.5*4.12*0.8+4.72
=(5.28+4.82)+(12.5*0.8)*4.12
=10+10*4.12
=10+41.2
=51.2