13.9减去3.78除以5再除以0.378如何进行简便运算?
问题描述:
13.9减去3.78除以5再除以0.378如何进行简便运算?
答
13.9减去3.78除以5再除以0.378
=13.9-3.78÷0.378÷5
=13.9-10÷5
=13.9-2
=11.9