简便计算:-100X(0.7-十分之三-五分之四)+0.037

问题描述:

简便计算:-100X(0.7-十分之三-五分之四)+0.037

-100X(0.7-十分之三-五分之四)+0.037
=-100×(0.7-1.1)+0.037
=-100×(-0.4)+0.037
=40+0.037
=40.037

-100×(0.7-3/10-4/5)+0.037
=-100×(0.7-1.1)+0.037
=-100×(-0.4)+0.037
=40+0.037
=40.037