54.9×0.38怎么简便计算,帮我
问题描述:
54.9×0.38怎么简便计算,帮我
答
54.9x0.38
=549x38x0.001
=20.862
54.9×0.38怎么简便计算,帮我
54.9x0.38
=549x38x0.001
=20.862