Question

零点七乘以十一点五减去零减去零点一七除以二的简便计算

Answer 1

0.17×11.5-0.17-0.17÷2
=0.17×11.5-0.17-0.17×0.5
=0.17×（11.5-1-0.5）
=0.17×10
=1.7