数学提问五年级上册智慧冲浪2.25*0.16＋264＊0．225＋5．2*2.25+0.225*20=?
问题描述：
数学提问五年级上册智慧冲浪2.25*0.16＋264＊0．225＋5．2*2.25+0.225*20=?
答
原式=2.25*0.16+2.25*26.4+2.25*5.2+2.25*2
=2.25*（0.16+26.4+5.2+2）
=2.25*33.76
=4.5*16.88
=9*8.44
=75.96