Question

100/12.5 100/6.25 100/3.125 100/1.5625 100/0.78125简便计算

Answer 1

原式=100*(1/12.5+1/6.25+1/3.125+1/1.5625+1/0.78125)

=100*（1/12.5+2/12.5+4/12.5+8/12.5+16/12.5）

=100*31/12.5

=248