93.7 5.55-1.8 +4.45-1.9 简算
问题描述:
93.7 5.55-1.8 +4.45-1.9 简算
答
93.7+5.55-1.8 +4.45-1.9
=93.7-(1.8-1.9)+(5.55+4.45)
=93.7-3.7+10
=90+10
=100