17.85+3.74-5.56如何简算
问题描述:
17.85+3.74-5.56如何简算
答
17.85-(4-0.26)-5.56
=17.85-4+0.26-5.56
=13.85-5.3
=8.5517.85+3.74-5.56=17.85+(3.75-0.01)-(5.55+0.01)=17.85+3.75-5.55-0.02=21.6-5.55-0.02=16.05-0.02=16.03