简算;5.38+88.2-2.38+1.8,还有28.38-5.34+26.3-4.66
问题描述:
简算;5.38+88.2-2.38+1.8,还有28.38-5.34+26.3-4.66
答
5.38+88.2-2.38+1.8
=5.38-2.38+(88.2+1.8)
=3+90
=93
28.38-5.34+26.3-4.66
=(28.38+26.3)-(5.34+4.66)
=54.68-10
=44.68