简便计算12.31*0.2/0.11/0.4218.3/4+5.3*2.5+7.13*7.534.25*5.24+1.52*2.5140.525/13.125/4*85.25（4.8*7.5*8.1）/（2.4*2.5*2.7）60.7777*0.7+0.1111*2.17（22944-22.944）/（45888-45.888）

Answer 1

2.31/0.11*0.2/0.4=10.5(乘法交换律）（18.3*0.25+53*0.25）+7.13*7.5=71.3*0.25+71.3*0.75=71.3(先算前面,再与后面用乘法分配律）4.25*5.24+1.52*2.51=26.08520.525/（13.125*4）*85.2=0.852(4.8*7.5*8.1)/(2.4*2.5...