0.049×2500+495×0.24+51×4.9=
问题描述:
0.049×2500+495×0.24+51×4.9=
答
题目有问题吗?哈哈 这样就可以了
0.049×2500+490×0.24+51×4.9
=4.9*25+4.9*24+4.9*51
=4.9*(25+24+51)
=4.9*100
=490