3.68×(-17.5)-6.2×0.075+36×3又3/4-0.
问题描述:
3.68×(-17.5)-6.2×0.075+36×3又3/4-0.
答
由3.68×(-17.5)-6.2×0.075+36×3又3/4-0.62×1/4=3.68×(-17.5)-6.2(0.075+0.025)+36×3又3/4(其中1/4=0.25,)=3.68×(-17.5)-6.2×0.1+36×15/4=-6.44-0.62+135=69.98.本题只能部分简便运算....