原式是106*1.25-18÷7.5+2.5还是106*1.25-18÷7.5+2.4 简算

106*1.25-18÷7.5+2.4
=(100+6)×1.25-2.4×7.5÷7.5+2.4
=125+6×1.25-2.4+2.4
=125+7.5
=132.5
9.25+9.9+百分之九十二点五
=9.25+1-0.1+0.925
=10.25+0.825
=11.075