6.5 减(1.6除以5减0.12)有简便算法吗

问题描述:

6.5 减(1.6除以5减0.12)有简便算法吗

6.5-(1.6÷5-0.12)
=6.5-(0.4*4÷5-0.12)
=6.5-(0.4*0.8-0.12)
=6.5-(0.32-0.12)
=6.5-0.2
=6.3