6.49*0.22+258*0.0649+5.3*6.49+64.9*0.19=?(简算)
问题描述:
6.49*0.22+258*0.0649+5.3*6.49+64.9*0.19=?(简算)
答
6.49(0.22+2.58+5.3+1.9)=6.49*10=64.9
6.49*0.22+258*0.0649+5.3*6.49+64.9*0.19=?(简算)
6.49(0.22+2.58+5.3+1.9)=6.49*10=64.9