(1)31.5-18.54/1.8 (2)1.82/(0.13*0.7) (3)2.7*(3.85-13.*1(4)(28.26-15.7)/3.14+2.81.5)快能简算的要简
问题描述:
(1)31.5-18.54/1.8 (2)1.82/(0.13*0.7) (3)2.7*(3.85-13.*1(4)(28.26-15.7)/3.14+2.81.5)快能简算的要简
答
(1)31.5-18.54/1.8=31.5-(18+0.54)/1.8=31.5-18/1.8-0.54/1.8=31.5-10-0.3=21.2(2)1.82/(0.13*0.7)= 1.82÷0.7÷0.13=2.6÷0.13=20(3)2.7*(3.85-13.*1=(4)(28.26-15.7)/3.14+2.81.5)=最后俩题再看看