解:设0.8里面有x个0.01,x×0.01=0.8x=0.8÷0.01x=808.05扩大到它的100倍=8.05×100=805答:0.8里面有80个0.01;8.05扩大到它的100倍是805.
0.8里面有(80)个0.01;8.05扩大到它的100倍是(805)
80 805
80